Firehouse Subs
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Small Roast Beef sub: roast beef, provolone, lettuce, tomato, onion, mayo, deli mustard
Ask for a SMALL. The website and app usually show only the Medium, which has about twice the carbs. Skip honey mustard, sweet mustard, BBQ sauce, jerk mustard and the datil pepper hot sauce, which all contain sugar. The pickle spear on the side adds 1g carbs.
27g
Total carbs
3g
Sugar
−4g
vs usual
Instead of a Medium Roast Beef sub (7g sugar)
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I ordered it
What's in it
Roast Beef - Small, standard build
27g carbs
Verified against Firehouse Subs's nutrition info on 2026-10-11. Drinks are made by hand, so amounts vary. Not medical advice.