As a forward to this, if you haven't tried corn tortillas fried in lard then you haven't lived. The lard here in Spain (manteca) is great for cooking. I wouldn't recommend using it every day but once in a while won't kill you (at least it won't kill me).
Besides family and friends, what I miss the most about the United States is Mexican food. The basic ingredients for a lot of Mexican dishes are a little hard to find in Spain, or at least here in Valencia. The chile peppers are different but you can find some that are a little spicy at most of the Pakistani green grocers as they eat spicy food in their part of the world. I buy a lot of my Mexican products, including corn and flour tortillas, at Bodega Portal Latino, 45 Calle Cadiz.