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SLU open for pickup + delivery
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Premium Ingredients
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private events @ the RUMPUS ROOM
Lunchbox South Lake
Lunchbox South Lake Union now open for Dine In Pickup and Delivery.
Click here for pickup and delivery options.
For Booking events, Catering, parties please call 425-295-9243 or 253-245-3501
OR send an email at rrevents@lunchboxlaboratory.com
- Open 9:30am to close Daily
- Open for Dine in, Pickup and Delivery
Appetizer Experiments
Sweet & Spicy Fried Pickles
Bacon Brussels
Cheese Curds
Gavacho’s Totchos
Buffalo Chicken Roll Ups
Funyun Chicharrones
Dogsticks
Salad Experiments
Caesar*
Lab Chop Chop
Mac & Caesar
Build your Own!
Burger Experiments
- All burgers served on organic buns with choice of fries or tots
- Double or triple up your patty for (4/6)
- Extra Bacon (2 extra pieces) for $2
- Premium Sides: sweet fries (+1), mac fries (+2) garlic fries or tots (+2), onion rings (+2), house or Caesar salad (+2), Brussels sprouts (+3), Cheddar mac (+3), mac du jour (+4), loaded mac du jour (+5), hot honey sweets (+3).
Homage to the Dick’s Deluxe*
Tear Jerker*
Cluck Norris
Faux Real
The Classic ‘MeriCAN*
Mack Daddy ‘MeriCAN*
James West*
The Smoker*
The CODFather
Shroom & Truffle Shuffle*
Bahn, James Bahn*
Burger of the Gods*
Alibaba Burger
Fish n’ Fries
Fish n’ Fries
Build Your Own Burger*
Includes 1 topping and 1 sauce
Served with fries or tots
1. Choose Your Patty
- American Kobe Beef
- Beyond Vegan Patty (+1)
- Vegan Black Bean Patty
- Chicken Breast
- Dork (+2)
- Double Patty - (+4)
- Triple Patty - (+6)
2. Buns
- Organic Burger Bun
- Lettuce Wrap
- Udi's Gluten Free Bun
- Grilled Cheese Sandwich Buns
3. Sauces +.25
- Billion Island Sauce
- Buttermilk Ranch
- Satan’s Tears Ketchup
- Papa’s Homemade BBQ
- Top Secret Burger Sauce
- Honey Mustard
- Plain ol’ Mayo
- Black Garlic Truffle Mayo
- Sweet Chili Mayo
- Habanero Mayo
- Jalapeño Ranch
- Celery Ranch
- Tapatio Dipping Sauce
- Smoker Sauce
- Vegan Burger Sauce
4. Toppings + 1.00
- Lettuce, Tomato, Onion, Pickle
- Grilled Onions
- Balsamic Onions
- Jalapeños
- Mushrooms
- Avocado
- Fried Egg*
- Onion Rings
- Bahn Mi Veggies
- Cheese Curd (+1)
5. Cheese + 1.5
- Cheddar
- American
- Pepper Jack
- Swiss
- Blue Cheese
- Guajillo Cream Cheese
- Chao Cheese
- Super Gorgonzola Spread
- Smoked Gouda
6. Bacon
- 2 pcs (+2)
- 4 pcs (+3)
7. Premium Sides
- Sweet Fries (+1)
- Mac Fries (+2)
- Garlic Fries or Tots (+2)
- Onion Rings (+2)
- Hot Honey Sweets (+3)
- Salad (+2)
- Bacon Brussels (+3)
- Cheddar Mac (+3)
- Mac du Jour (+4)
- Loaded Mac (+5)
Kids’ Menu
*Sub Apple slices or tots for free. Kids meals include a small milk or soda. Ages 12 and under only.
Shakes
Hand Spun with locally made ice cream
All Natural Shakes
Small 12oz
Large 16oz
- Straight-Up Vanilla
- Strawberry
- Nesquick Chocolate
- Nutella
- Banana Cream Pie
- Boston Cream Donut
- Oreo
- Orange Creamsicle
- Mint Chocolate Chip
- Reese’s Peanut Butter
Shake Add-ons
75¢ each
- Chocolate Ganache
- Custard
- Fudge
- Peanut Butter
- Caramel
- Graham Crackers
- Banana
- Marshmallow Cream
- Oreo Pieces
Spike Your Shake!
Spike your shake for $4 with Kahlua, Irish Cream, Malibu Coconut, Whipped Cream Vodka & More!
Boozie Shakes
Or keep it virgin
The Drunken Elvis
Caramel Macchiato
Cinnamon Toast Crunk
Lunchbox Cocktails
Hey! You’re an adult. Drink responsibly.
Too Skool 4 Kool
Root Beer Barrels
LunchBox Lemon Drop
Astronaut’s Manmosa
Tang-O-Rita
The Mule
Draft Beers
Wine
Beverages (non-alcoholic)
*Burgers and eggs may be cooked to order – consuming raw or under cooked meats may increase your risk for foodborne illness.
Happy Hour Menu

Daily 3-6 & 9-Close. No substitution, 1 drink minimum.
#SNACKZ
Sweet & Spicy Fried Pickles
FLAMING HOT CHEETO MAC
BEYOND CHORIZO STUFFED AVOCADO
TOTS POUTINE
HOT HONEY ROSEMARY SWEET FRIES
DORK TACOS (2)
CHILI LIME SHISHITO PEPPERS
SMOKY CHEESY BROCCOLI
SALADS
Add chicken breast for 4.29.
BAD HOMBRE SALAD
CAESAR
LBL FAVES
Served with fries. Sub lettuce wrap or Gluten free bun.
BURGER 101
JAMES WEST JUNIOR
FRIJOLE CABEZA CALIENTE
I'VE GOT SEOUL (I'M SUPER BAD)
LUNCHBOX CHICKEN LITTLES (2)
Shakes
Small Chocolate or Vanilla Shake
Cocktails
LUNCHBOX MARGARITA
THE MULE
Booze
VINO
BEER
Beer & Wine
Brunch Menu
Catering Banquets
Event Space
Full Bar
Full Menu
Happy Hour
Outdoor Dining
Shake Lab
To Go Delivery