Some suggestions for cheap eats in Oslo since it's still one of the world's most expensive cities..

Bear in mind that these are basic restaurants

Punjab Tandoori at Grønland 23. Chicken Curry, Rice, Nan and Salad for between 65 and 80 NOK depending on what type of curry you choose. Ask for it spicy if that's how you like it otherwise it'll be quite mild

Just next to Grønland underground station and next to the Star Pub there is a little takeaway stall which sells homemade vegetable samosas for 10 NOK each (they are really good)

Habibi Takeaway (Storgata 14) (you can sit inside) is a palestinian place for kebabs, falafel etc. A falafel dinner with falafel, pita, french fries, salad, chilli sauce, humus and garlic is 60 NOK. Around the corner is Habibi Cafe run by the same people but is more restaurant like and sells alcohol

Bamboo Stockfleths gate 53B (Sagene) is a small Asian restaurant and although a bit out of the centre well worth the trip. Main course is approx 75-85 NOK and includes rice. Sells alcohol. Take bus number 37 (runs every 5 minutes from the city centre)

On the same bus route is an Italian place called Arte Pazze Ullevålsveien 61, Proper Italian pizzas for between 70 and 90 NOK...Really nice little place