This Spanish sandwich is a variety of fish-based bocadillo sandwiches, consisting of Spanish bread and a filling of salmon. The sandwich’s filling usually consists of pieces of smoked salmon that are layered inside a Spanish-style baguette (barra de pan) that’s been cut in half lengthwise.

The bread is occasionally toasted for added crispiness, and it may also be drizzled with olive oil on the inside to make it juicer. Apart from the salmon, the sandwich’s filling also typically contains other ingredients such as queso fresco (fresh cheese), salsa criolla (Criollo sauce), arugula, tomato slices, tartar sauce, pickles, capers, or tortilla francesa (French omelet), among others.

Traditionally, bocadillo de salmon is enjoyed as an afternoon snack (merienda), but it can also be served for dinner.