All six picks are in Diamond Bar. The guide follows exact branches on Gentle Springs Lane, South Diamond Bar Boulevard and Golden Springs Drive, with separate choices for dim sum, noodles, duck, spicy plates, café food and clay-pot rice.
6 restaurants · 4 list delivery · checked
An unranked, researched shortlist from operator menus and locations. No ratings, and no claimed visits. How we research.
An imagined Diamond Bar-inspired table. AI illustration, not a restaurant photograph.
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A shorter path to dinner.
Choose an area, a kind of meal, or only restaurants that list delivery. These filters narrow the quick list; all 6 detailed profiles stay below.
“Lists delivery” means the operator’s ordering page or a checked platform listing showed delivery on October 8, 2026. Availability depends on your address and time. “Vegetarian options” means a specific option is named on the checked menu, not an allergen or cross-contact guarantee.
Less menu indecision
Ways to make a meal.
Daytime dim sum on Gentle Springs Lane
Choose the four-piece shrimp and pork dumpling labels, then add a bun, rice roll or congee. The dim sum menu says 10:30 AM-3:00 PM; confirm the weekend opening because the ordering-hours panel starts at 11:00 AM.
Pair Tomato Egg Hot Oil Noodle with Home Pork Rouburge, or choose pita bread soaked in lamb soup. The operator lists daily 11:00 AM-9:30 PM; the linked menu showed pickup only.
Choose Steamed Fish Head w.Chopped Chili with Shredded Potato w.Chili & Vinegar, or use the separately named Chinese xiao long bao item. Daily hours have a 3:00 PM-5:00 PM break; confirm the ordering channel if relying on delivery.
Diamond Palace publishes separate daytime dim sum and dinner menus at its Gentle Springs Lane branch. The daytime menu has steamed shrimp and pork dumplings, buns, rice rolls and congee; the dinner menu lists larger eight-piece dumpling labels and seafood dishes.
Build an order. 7. Shrimp Dumpling (Har Gaw) (4) / 水晶鮮蝦餃 (4) $6.35 · 8. Pork Dumpling (Siu Mai) (4) / 蝦子燒賣皇 (4) $6.35 · 12. Steamed Mini Pork Dumpling (4) / 南翔小籠包(4) $6.35. 12. Steamed Mini Pork Dumpling (4) / 南翔小籠包(4) has the literal Chinese name 南翔小籠包, Nanxiang xiao long bao. Add Plain Rice Rolls or Preserved Egg with Shredded Pork Congee. Dinner labels are 2. 蝦子燒買皇 Porking Dumpling (siu Mai) (8) $14.36 · 3. 水晶鮮蝦餃 Shrimp Dumpling (har Gaw) (8) $14.36. The dinner shrimp item is described as pan-seared; ask about preparation.
Before you go. Pickup and delivery hours panel: Monday-Friday 10:30 AM-3:00 PM and 5:00 PM-9:30 PM; Saturday-Sunday 11:00 AM-9:30 PM. The separate location page lists 10:30 AM-3:00 PM and 5:00 PM-9:00 PM. Daytime dim sum is labelled 10:30 AM-3:00 PM and dinner 5:00 PM-9:00 PM; confirm an early weekend visit or late order by phone.
Operator online pickup menu on diamondpalaceseafood.com, read 2026-10-08. The three prices are from All Day Menu / Dim Sum, labelled 10:30 AM-3:00 PM. The two $14.36 items in order are from Dinner Menu / Appetizer, labelled 5:00 PM-9:00 PM, with eight in each label. The dinner shrimp description says pan-seared; no steamed preparation is inferred for that item. These are listed prices before destination-dependent delivery charges. Checked ; before tax, tip and fees. Prices can change, and delivery-app prices are often higher than the restaurant’s own.
Sources & verification
Operator information checked October 8, 2026. These sources support the menu and logistics; our order suggestions are editorial, without a claimed visit.
Tasty Xi'An’s operator-linked menu opens with an Xi'an Noodle section containing cold noodles, hot-oil noodles, pita bread soaked in beef or lamb soup and meat-filled rou burge labels. This is the guide’s regional alternative to dim sum, roast duck and a shared clay-pot plate.
Build an order. Use 22.Tomato Egg Hot Oil Noodle with 1.Home Pork Rouburge, or choose 19.Pita Bread Soaked in Lamb Soup. The menu also names 69.Toothpick Lamb w.Cumin and 14.Dumpling w.Pork & Leek. For a named vegetable plate, consider 120.Braised Eggplant & Green Beans or 122.Stir Fry Shredded Potatoes; confirm broth and sauces.
Before you go. The operator home page lists Monday-Sunday 11:00 AM-9:30 PM and the Suite L branch at 1155 South Diamond Bar Boulevard. The linked MealKeyway menu showed Pickup with a 10-20-minute estimate and no visible delivery choice at this check. Confirm a collection time when placing an order.
Operator-linked MealKeyway online pickup menu, read 2026-10-08. These are the displayed item prices for Suite L. Original spellings and item numbers are retained; unrelated platform prices were not substituted. Checked ; before tax, tip and fees. Prices can change, and delivery-app prices are often higher than the restaurant’s own.
Sources & verification
Operator information checked October 8, 2026. These sources support the menu and logistics; our order suggestions are editorial, without a claimed visit.
Duck Palace’s home page describes Peking duck and roasted dishes, while its linked menu names Nanjing Roast Duck, Boiled Salted Duck and a Roast Duck Set Meal. Cold dishes and a separate spicy-snack section let a duck order be paired with tofu, potatoes or lotus root.
Build an order. Choose Nanjing Roast Duck or Boiled Salted Duck, then add Marinated Dried Tofu or Shredded Potatoes from Cold Dishes. Roast Duck Set Meal is a separate $78.80 label; its menu entry does not list the dishes or portions included, so ask before assuming the composition of the set.
Before you go. Tuesday closed. Monday and Wednesday-Sunday 10:00 AM-8:00 PM on the operator home page. The linked storefront showed the store closed for the night and pickup resuming the next day at 10:00 AM. Use the exact 1381 South Diamond Bar Boulevard branch when arranging collection.
Operator-linked MealKeyway online pickup menu, read 2026-10-08. These are listed item prices; no serving size is stated in these labels, and no delivery fee or checkout total was verified. The operator site’s customer testimonials were not used as menu evidence. Checked ; before tax, tip and fees. Prices can change, and delivery-app prices are often higher than the restaurant’s own.
Sources & verification
Operator information checked October 8, 2026. These sources support the menu and logistics; our order suggestions are editorial, without a claimed visit.
Mandarin Taste’s operator site describes dishes from Hunan and Szechuan. Its linked menu separates specialty dishes such as chopped-chili fish head from Chinese-American plates and a vegetable section, and includes a Chinese-language xiao long bao label alongside other dumplings.
Build an order. Choose C2.Steamed Fish Head w.Chopped Chili or C16.Chongqing Spicy Chicken, then add C15.Shredded Potato w.Chili & Vinegar or 54.Sauteed Spinach w.Garlic. 小籠包(8) $13.20. 小籠包(8) is the literal Chinese xiao long bao name in the menu’s Chinese noodle-and-soup section. The separate English Steamed Juice Dumpling label is not used to infer another soup-dumpling observation.
Before you go. The operator home page lists Monday-Sunday 11:00 AM-3:00 PM and 5:00 PM-9:00 PM. Its linked MealKeyway storefront says Start your Pickup or Delivery order. A separate operator-hosted BeyondMenu storefront says it does not offer delivery; confirm the channel and eligibility before relying on delivery.
小籠包(8) $13.20 · C2.Steamed Fish Head w.Chopped Chili $32.99 · C15.Shredded Potato w.Chili & Vinegar $15.39
Operator-linked MealKeyway online ordering menu, read 2026-10-08. These are listed item prices in that channel. The same branch also has a separately fetched BeyondMenu storefront with different labels and some lower prices; the two menus are not combined. The Chinese 小籠包 label itself states eight. Checked ; before tax, tip and fees. Prices can change, and delivery-app prices are often higher than the restaurant’s own.
Sources & verification
Operator information checked October 8, 2026. These sources support the menu and logistics; our order suggestions are editorial, without a claimed visit.
This Diamond Bar storefront publishes a menu of congee, Hong Kong-style buns, sandwiches and cart noodles. It supplies a café meal with a different format from roast duck or a table of dim sum, and also names Vegetarian Fried Rice and several vegetable dishes.
Build an order. Use Pork & Preserved Egg Congee with a Chinese Donut, or choose Satay Beef Pineapple Bun and tea. Fish Siu Mai $7.95 is a separate snack label, with no piece count stated. Other named options include Macau Style Pork Chop Sandwich, Vegetarian Fried Rice and Hong Kong Style Wonton Noodle Soup.
Before you go. Chowbus Store Info publishes Monday-Sunday 8:30 AM-8:59 PM. The storefront was closed for the night and the next pickup time shown was 9:00 AM, later than the listed opening. Its service selector has Delivery and Pickup. Check the chosen menu and collection or delivery time before ordering.
Fish Siu Mai $7.95 · Satay Beef Pineapple Bun $10.50 · Pork & Preserved Egg Congee $14.95+
Operator Chowbus online pickup menu, read 2026-10-08. Pickup was selected in the branch storefront. The congee price carries a plus sign and is a starting price; Fish Siu Mai and Satay Beef Pineapple Bun are fixed displayed amounts. Zero-dollar and $999 placeholder entries elsewhere in the menu were not used. Checked ; before tax, tip and fees. Prices can change, and delivery-app prices are often higher than the restaurant’s own.
Sources & verification
Operator information checked October 8, 2026. These sources support the menu and logistics; our order suggestions are editorial, without a claimed visit.
Jade House’s menu distinguishes Rice in Clay Pot from its other clay-pot dishes and states a twenty-minute cooking time for the rice. That gives this branch a different meal purpose from Diamond Palace’s dim sum, with seafood, roast meats and vegetable plates also available.
Build an order. From Rice in Clay Pot choose Mushroom with Chicken, Salted Fish with Pork or Assorted B.B.Q. Meat, described as Chinese Sausage & Preserved Meat. The section says Take Twenty Minute to Cook. Add Crispy Bean Curd with Mixed Vegetable or Stir Fried Mix Vegetable; ask about sauces and preparation when choosing vegetables.
Before you go. The operator’s expanded hours panel lists pickup and delivery Monday-Sunday 10:30 AM-9:00 PM. The storefront also says Our online ordering is temporarily not available and asks customers to call 909-861-9383. Call to confirm the branch’s current service and clay-pot rice order rather than assuming the displayed controls accept an order.
Mushroom with Chicken $15.95 · Assorted B.B.Q. Meat $15.95 · Crispy Bean Curd with Mixed Vegetable $16.95
Operator online menu on jadehouseseafoodbbq.com, read 2026-10-08. The first two items are in Rice in Clay Pot; the third is in Vegetable. These are displayed prices while the storefront explicitly says online ordering is temporarily unavailable, so current phone-order prices should be confirmed. Checked ; before tax, tip and fees. Prices can change, and delivery-app prices are often higher than the restaurant’s own.
Sources & verification
Operator information checked October 8, 2026. These sources support the menu and logistics; our order suggestions are editorial, without a claimed visit.
Jade House is at 1124 S Diamond Bar Boulevard and Tasty Xi'An is at 1155, Suite L. Their menus supply clay-pot rice and Xi'an noodle meals respectively.
Mandarin Taste is at 23391 Golden Springs Drive. Its operator description names Hunan and Szechuan cooking, and its menu includes specialty plates and vegetables.
Delicious Food Corner’s Diamond Bar storefront is at 20955 Golden Springs Drive. Its congee, buns and café snacks supply this guide’s Hong Kong café meal.
Yes. Diamond Palace is on Gentle Springs Lane; Jade House, Tasty Xi’An and Duck Palace are on South Diamond Bar Boulevard; Mandarin Taste and Delicious Food Corner are on Golden Springs Drive. No Rowland Heights, Arcadia or Irvine branch is included.
Where are the dim sum and xiao long bao choices?
Diamond Palace’s daytime menu lists four-piece Har Gaw and Siu Mai labels at $6.35, plus Steamed Mini Pork Dumpling with the Chinese name 南翔小籠包. Mandarin Taste’s linked menu has the separate literal Chinese 小籠包(8) label at $13.20. English juice-dumpling labels are not used to infer additional soup-dumpling prices.
Which menus have named vegetable options?
Tasty Xi’An lists Braised Eggplant & Green Beans and Stir Fry Shredded Potatoes; Mandarin Taste lists garlic spinach and chili-vinegar shredded potato; Delicious Food Corner lists Vegetarian Fried Rice; Jade House lists Crispy Bean Curd with Mixed Vegetable and Stir Fried Mix Vegetable. Ask about broth, sauces and preparation.
Which branches list delivery?
Diamond Palace and Delicious Food Corner display Delivery and Pickup controls. Mandarin Taste’s linked MealKeyway channel names delivery, while its separate BeyondMenu storefront says no delivery. Jade House lists delivery hours but disables online ordering and asks customers to call. Duck Palace and Tasty Xi’An showed pickup only. Confirm eligibility for the actual destination.
Why do some dumpling prices or service times differ?
Diamond Palace’s daytime four-piece labels and evening eight-piece labels belong to different menu sections and prices. Mandarin Taste has two ordering storefronts with some different prices. Jade House’s displayed menu remains readable while online ordering is unavailable. The records preserve these channels and conflicts rather than treating one price or timetable as universal.
Reading the menus
Words you may see in Diamond Bar.
Mala A Sichuan flavor pairing the tingling numbness of Sichuan pepper with chili heat; the name means numbing and spicy.
Sichuan peppercorn The dried husk of a Zanthoxylum berry that gives Sichuan dishes a citrusy scent and a tingling, numbing buzz; it is not a true pepper.
Doubanjiang A salty, savory fermented paste of broad beans, usually with chili, that anchors many Sichuan dishes; the Pixian version is the most renowned.
Guotie (potstickers) Pan-fried dumplings browned on one side, then steamed with a little water under a lid; 'potsticker' is the English form of guotie.
Baozi A yeast-leavened bun with a filling, most often steamed; unfilled steamed buns are called mantou.
We selected 6 Diamond Bar restaurants for different meals. This is not a numerical ranking or a record of dining visits. We checked operator menus, exact locations, delivery options and practical constraints on October 8, 2026, and left out places we could not verify.
Order suggestions are editorial. Food illustrations are locally generated AI images, not photographs of any restaurant. See the editorial approach. Other guides: all city guides.