Substance Coffee Diner

Vegan Sandwiches, Fully Vegan, Food Truck

★ 4.4 · $$ · Hours

LunchDinnerTakeoutQuick BitesWork/Study

Amenities: deck Outdoor Seating

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lightbulb Popular tips:  "Try the Philly cheesesteak and fried chicken sandwiches" "Try the Philly cheesesteak and fried chicken sandwiches"
"Pre-order or call ahead to reduce wait times, especially on busy nights"
"Get a side of housemade ranch sauce with your sandwich"
"Bring napkins—sandwiches can be very messy"
"Check menu availability in advance as the food truck does not always appear at the same location"
 

restaurant_menu Must-try:  sandwich, philly cheesesteak, salad sandwich — popular (×23)
philly cheesesteak — popular (×10)
salad — popular (×4)
chicken sandwich — popular (×4)
fried pickles — popular (×4)
 

thumb_up Praised for:  many vegan options, fast service, friendly staff many vegan options ×3
fast service ×2
friendly staff ×5
affordable
large portions ×2
 

Substance Coffee Diner is a fully vegan food truck known for its flavorful American-style sandwiches, including vegan cheesesteak, fried chicken, and Sonoran hot dogs. The venue operates mainly via pickup or delivery, with limited seating, and patrons often note a casual, friendly atmosphere despite occasional wait times, especially during busy evenings. Prices are mid-range, reflecting the generous portions and quality of the food, though some recent reviews mention occasional menu availability issues and variability in service friendliness.