El Salvador is a very small country almost without indigenous population, so cheese and dairy products here are more popular than in Mexico or Guatemala. The most popular food are "pupusas" - flatbread made with corn/wheat dough with a filling inside. The most popular filling is beans with cheese, but in any place you can ask to make "pupusa" with your own ingridients - just beans, or beans with garlic and some vegetables, depending on a place. Like in every country of Central America you can save you money buying "frijoles refritos" (refried beans) in supermarkets and tortillas in the streets. Ice-cream without milk is also available.