Strong filter coffee at T1 is the whole point here.
Madras Coffee House sits airside in Terminal T1 and runs through the early-morning bank of low-cost departures, so you see a line from about 4:30–7:00 a.m. Price tier is $ by airport standards: a steel tumbler of filter coffee usually costs less than a basic latte at the big chains down the hall. Seating is limited, so think “grab and go” rather than a long sit-down.
The move here is South Indian filter coffee, not espresso. Regulars on Google Maps flat-out call this their “go-to” spot at T1 before morning flights, specifically for the stronger, more flavorful brew compared with generic kiosks. The serving size is on the smaller side for the price, noted in multiple reviews, but the hit of coffee is solid and comes out fast enough for a 20–30 minute pre-boarding stop.
Food is simple: idli, vada, maybe a couple of extra snacks depending on the day. Travellers mention that the idli plates are ready quickly, so you can order, eat, and still reach a nearby gate in under 15 minutes. One review calls the idlis “decent and much better than grabbing a cold sandwich,” which feels about right; this is basic, hot, and filling, not a full restaurant spread.
Watch out for the limited menu if you need more than coffee and a small tiffin. Several reviews point out that other South Indian chains in Delhi have longer menus, with dosas and full meals, while Madras Coffee House keeps it tight: coffee first, a couple of snacks second. The 4.0-ish rating reflects that trade-off: strong on quality for its few items, weaker on variety.
Tip: if coffee matters to you, walk past the first generic kiosk you see in T1 and head here instead, then carry your tumbler and idli towards your exact gate before boarding starts.