INGREDIENTS for 2 hamburgers

1 big potato or 2 medium potato
2 carrots
Corn flour q.b.
Grana cheese (optional)
Salt, pepper
Olive oil

Cut potatoes and carrots and steam them. Once cook, press them with a fork. Add salt, pepper, corn flour and chhese until reaching a right consistence (not dry and not wet). Give the hamburger shape and cook  them in a pan with few olive oil, 2 minutes for every side.