Barbecue$$DowntownSun-Thu 11:00-21:00; Fri-Sat 11:00-22:00
Firestone Grill's tri-tip sandwich remains San Luis Obispo's best-value famous meal, oak-grilled beef on a garlic-butter roll for fast-food money.
Try: Tri-tip sandwich
Tip: The line moves faster than it looks; order at the counter and grab a patio table on Higuera Street.
Pizzeria$$DowntownSun-Thu 11:00-00:00; Fri-Sat 11:00-01:00
Woodstock's Pizza runs slice and pitcher deals that have kept generations of Cal Poly budgets afloat at Higuera and Osos in San Luis Obispo.
Try: Pizza by the slice and pitcher deals
Tip: It serves until midnight most nights and 01:00 on Friday and Saturday, one of the last kitchens open downtown.
Vegan$FoothillSun-Thu 11:00-20:00; Fri-Sat 11:00-21:00
Ziggy's proves plant-based fast food can undercut the drive-through in San Luis Obispo, with taquitos and house-patty burgers at counter prices.
Try: Plant-based burgers and taquitos
Tip: The vegan menu is clearly labelled; order the house Ziggy patty over the Impossible if you want the original.
Deli$Railroad DistrictDaily 11:00-17:30
High Street Market & Deli drops sandwich prices after 16:20 every day, the 1927 corner grocery that feeds San Luis Obispo students on a budget.
Try: Stacked deli sandwiches
Tip: Tuesday is student day: any High St sando for $9 with college ID, one per card.
Deli$DowntownMon-Sat 09:00-17:00; Sun 10:00-15:00
Lincoln Market & Deli feeds San Luis Obispo's north side from a 1941 corner store, with breakfast burritos and Dutch crunch sandwiches under $15.
Try: Breakfast burritos and specialty sandwiches
Tip: The Almost Famous Breakfast Burrito sells out by late morning on weekends.
Mexican$Upper MontereyDaily 10:00-20:30
Taqueria Santa Cruz Express keeps tacos in the single digits on Monterey Street, the cheapest dependable hot meal in central San Luis Obispo.
Try: Al pastor tacos and burritos
Tip: The Foothill Boulevard branch at 862 Foothill runs later into the evening for the campus crowd.