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Substance Diner

Vegan Diner, Sandwiches

Worth ordering: Sandwichnamed in 22 reviews

Try the Philly cheesesteak and spicy 'chicken' sandwiches, both highly praised for flavor and texture.

$$

Top tips

  • Good to know: Order ahead or visit during less busy times to avoid long wait times, especially on event nights.
  • Expect some messiness with the sandwiches and bring plenty of napkins.
All 4 tipsShow fewer
  • Enjoy your meal at the nearby MotoSonora Brewery's dog-friendly beer garden with live music.
  • Use the Food Truck app for pickup or DoorDash for delivery to streamline ordering.

Must-try

  • Worth ordering: Philly cheesesteaknamed in 11 reviews

  • Worth ordering: Chicken sandwichnamed in 8 reviews

  • Worth ordering: Friesnamed in 7 reviews

+3 more worth orderingShow fewer
  • Worth ordering: Sonoran dognamed in 7 reviews

  • Worth ordering: Fried picklesnamed in 5 reviews

  • Worth ordering: Saladnamed in 5 reviews

People also mention tlt, burger and caesar salad.

Good for

Praised for lively atmosphere, affordable and fast service.

All 5 things people praiseShow fewer

Also praised for generous portions and cozy atmosphere.

Good to know

  • Dish availability varies; check with the venue
  • Outdoor seating
  • Lunch, dinner, takeout
  • Cards and mobile pay

About

Substance Coffee Diner is a fully vegan food trailer known for hearty American-style sandwiches like the Philly cheesesteak, spicy "chicken" sandwich, and Sonoran dog. The casual setup emphasizes takeout and outdoor dining often paired with the adjacent MotoSonora Brewery, creating a vibrant, communal atmosphere. While most guests praise the flavorful, indulgent meals and generous portions, some note occasional long waits and mixed experiences with customer service.

Visit

Open the map

3445 E Benson Hwy, Tucson, AZ 85706

Opening hours

Monday
16:00–20:00
Tuesday
16:00–20:00
Wednesday
Closed
Thursday
16:00–20:00
Friday
16:00–20:00
Saturday
11:00–20:00
Sunday
11:00–19:00

the food

4.4 out of 5. Spinach Rating

From recent reviews, out of 5.

  • Good food
Google Maps
4.6 175 reviews Read on Google Maps
HappyCow
4.7 17 reviews Read on HappyCow
How we rank

eating vegan

Fully vegan

Everything on the menu is vegan.

What the grades mean

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