South Indian€€bahnhofsviertelDaily 09:00-22:30
Saravanaa Bhavan feeds Frankfurt generously for little on Kaiserstraße, dosa and thali portions that defeat most appetites at lunch prices and dinner alike.
Try: Masala dosa or the full vegetarian thali
Tip: The thali is the value play: multiple curries, rice, bread and dessert on one tray, refilled in the South Indian tradition.
Street food€bahnhofsviertelDaily 11:00-19:00
Frittenwerk's fresh-cut fries fill Frankfurt station-district lunch breaks for under ten euros, poutine gravy included and vegan dips on the board.
Try: Loaded fries or poutine
Tip: The plain fries with two house dips are the honest budget order; poutine upgrades still land under most lunch menus.
Burgers€€bahnhofsviertelMon-Sat 11:30-23:00; Sun 11:30-22:00
Der Fette Bulle keeps a serious burger and fries in reach of a Frankfurt lunch budget, portions built for the Kaiserstraße appetite at any hour.
Try: Cheeseburger with fries
Tip: The lunch hours before 12:30 dodge both the queue and the office rush; water is the local's drink here, and free-ish.
Bakery€bahnhofsviertelMon-Fri 07:00-19:00; Sat-Sun 08:00-18:00
Zeit für Brot's Kaiserstraße counter beats every station snack in Frankfurt on price and quality, organic bread rolls from early morning until evening.
Try: Belegte Brote and a cinnamon roll
Tip: A topped bread and coffee runs cheaper than anything inside the Hauptbahnhof and tastes double the price.
Eritrean€€bahnhofsviertelMon-Thu 16:00-23:00; Fri-Sat 13:00-23:00, kitchen until 22:00; closed Sun
Im Herzen Afrikas stretches a Frankfurt food budget furthest when shared, Eritrean platters that feed two for one main-course price elsewhere.
Try: Vegetarian injera platter, shared
Tip: The vegetarian platters are the value champions; count one platter per two people and add injera before adding dishes.