Crispy Golden Katsu.
House-Crafted Secret Sauces.
Upland's favorite Asian Fusion comfort spot. Made-to-order Pork & Chicken Katsu, rich Japanese Curry, Garlic Edamame, and customizable Bento Sets crafted with family recipes.
Family Owned & Operated
Warm service & freshly cooked food
Hand-Pounded
Crispy katsu made every day
Cozy Vibes & Big Flavor in Upland Town Square
Step through our doors at Upland Town Square on Foothill Blvd and you’ll find a friendly, modern counter-service haven adorned with lush greenery, warm amber glow, and the mouthwatering aroma of freshly fried panko katsu and simmering Japanese curry.
Whether you’re stopping by for a speedy lunch rice bowl ($11.00), custom-building your Build Your Own Plate ($15.95) with 12 signature secret sauces and complimentary miso soup, or grabbing hot takeout on your way home, we pour heart and craft into every single order.
Family Secret Recipes.
Asian Fusion Cooked Fresh To Order.
Build your custom plate with our 4-step system ($15.95 with free Miso Soup), or explore our Rice Bowls, Udon Soups, Gyoza, Sides, and viral Pandan & Donut Dunkers.
Build Your Own Plate • $15.95
Tap the exact options from Secret Sauce's menu board to build your custom plate set!
Every Build Your Own Plate includes warm authentic miso soup at no extra charge!
Popular$15.95Build Your Own Plate Set
The #1 Secret Sauce signature! Choose 1 Base (Rice, Udon, Pita, or Veggies) + 1 Protein (Chicken Katsu, Shrimp, Pork Katsu +$1, Grilled Chicken, Beef Stew +$1, Fried Tofu, Veggies) + 1 Secret Sauce + 2 Salads (Macaroni, House, or Fruit) + COMPLIMENTARY Miso Soup included!
Popular$11.00Chicken Katsu Rice Bowl & Sauce
Generous sliced golden chicken katsu cutlet served piping hot over steamed jasmine rice with your choice of any signature Secret Sauce.
Popular$12.00Shrimp Tempura Udon Soup
Chewy thick Japanese udon noodles in piping hot savory dashi broth, topped with sweet corn, scallions, seaweed, fish cake, and crispy shrimp tempura.
Popular$5.00Pandan & Donut Dunkers
Secret Sauce's viral dessert! Warm golden fried Asian donut dunker sticks served with silky sweet pandan coconut custard dip.
$3 - $7Mochi Ice Cream (Mango, Green Tea, Strawberry)
Chewy sweet mochi rice cake filled with premium creamy ice cream (Mango, Green Tea, Strawberry). 1 for $3 • 2 for $5 • 3 for $7.
Popular$7.00Garlic Edamame
Tender soybean pods wok-tossed in toasted garlic oil, coarse sea salt, and aromatic chili seasoning.
$7.00Gyoza (Pork or Veggies)
Crispy pan-seared dumplings filled with your choice of seasoned pork or garden vegetables, served with tangy dipping sauce.
$9.00Shrimp Tempura Side
Light and airy golden fried shrimp tempura served hot and crispy with dipping sauce.
$3.00Miso Soup
Traditional soothing dashi broth with tofu, seaweed, and scallions. (Always FREE with any Plate Set!)
$5.00Regular Edamame
Steamed young green soybeans sprinkled with coarse sea salt.
$6.00Macaroni Salad
Classic creamy deli macaroni salad with elbow pasta and mild seasoning.
$6.00Fruit Salad
Crisp chilled fruit medley cut fresh daily.
$5.00House Salad
Crisp shredded cabbage and garden greens paired with house dressing.
$5.00Steamed Veggies Side
Tender steamed garden vegetables (broccoli, carrots, zucchini).
$2 - $3Extra Base (Rice $2 • Udon $3 • Pita $3)
Steamed Jasmine Rice ($2), Chewy Udon Noodles ($3), or Warm Pita Bread ($3).
$2 - $5Extra Sauce (4oz Cup $2 • Big Cup $5)
Take home any of the 12 secret sauces! 4oz dipping cup ($2) or Big Cup ($5).
$11.00Pork Katsu (À La Carte)
Full hand-pounded crispy panko pork cutlet freshly fried.
$10.00Chicken Katsu (À La Carte)
Full crispy breaded chicken katsu cutlet.
$10.00Grilled Chicken (À La Carte)
Juicy marinated and grilled tender chicken breast cutlet.
$11.00Beef Stew (À La Carte)
Tender chunks of slow-braised savory beef stew.
$9.00Fried Tofu (À La Carte)
Golden crispy fried silken tofu triangles.
Secret Sauce Party Trays & Catering Available
1/2 Trays of Chicken Katsu ($70), Pork Katsu ($85), Grilled Chicken ($70), Shrimp Tempura ($60), Udon ($45), and Macaroni Salad ($50). Each protein tray includes 3 cups of your favorite secret sauce.
The 12 Homemade Secret Sauces
Every plate is paired with your choice of our family-recipe sauces made fresh in-house daily. Need extra to take home? 4 oz cups ($2.00) and Big Cups ($5.00) are available!
Japanese Curry
Rich Japanese slow-cooked curry with warming spices.
Basil Sauce
Proprietary Thai sweet basil and garlic green glaze.
Blue Lagoon
Infused with blue spirulina — our eye-catching creation.
Sweet Chili
Zesty sweet heat with garlic and chili pepper flakes.
Pear Curry
Savory curry simmered with Asian pear natural sweetness.
Tonkatsu Sauce
Traditional dark tangy-sweet Japanese BBQ glaze.
Orange Sauce
Bright and citrusy glaze with aromatic orange peel hints.
Spicy Mayo Sauce
Silky spicy aioli whipped fresh for katsu & tempura.
Tamarind Sauce
Exotic, tart-sweet Southeast Asian tamarind glaze.
Crazy Spicy
Crushed chili seed blend for fearless spice lovers.
Peanut Sauce
Creamy roasted peanut sauce with aromatic garlic.
Teriyaki Sauce
Glossy soy, mirin, and brown sugar reduction.
Loved By Upland Locals
With over 300+ 5-star ratings across ToastTab, Grubhub, and Google, here is what our guests have to say.
"Best Chicken Katsu I have had in a while! Super crispy even on delivery, and the Japanese Curry sauce is absolute perfection."
Ronald M.
Build Your Own Set (Pork Katsu)
"The chicken katsu is so delicious and so is the curry sauce! The food is always prepared super fast and reliable. A staple in Upland!"
Lauren P.
Signature Rice Bowl
"Found Secret Sauce on delivery and blown away! Tempura shrimp was so fresh and crispy. The house salad dressing with subtle coffee/sesame undertones is incredible!"
April K.
Build Your Own Set & Shrimp Tempura
"Excellent food! The tempura shrimp and katsu stayed super crispy, which is so rare in takeout. They also threw in a free miso soup. 10/10!"
Brian S.
Shrimp Tempura & Katsu Set
"Generous portions, high quality ingredients, and super friendly staff. Loved the free miso soup touch!"
Spencer G.
Build Your Own Set
"Packaged extremely well, arrived hot, and tasted incredible. The garlic chili edamame is a must order every single time."
Daniel T.
Garlic Edamame & Pork Katsu Set
Location & Business Hours
We are conveniently located inside Upland Town Square at Foothill Blvd & Benson Ave. Step inside for our warm counter-service dining or pick up hot food in minutes!
Address
903 W Foothill Blvd. #B, Upland, CA 91786
Located at Upland Town Square
Phone / Phone Orders
(909) 946-0441Operating Hours
Email Contact
SecretSauce903b@gmail.com