The chorizo-and-black-bean filling can be refrigerated for up to 2 days. Reheat gently before using.
Bolillo and telera rolls, the two classic breads for Mexican tortas, are 6-inch-long oval rolls that are similar to hoagies or soft baguettes; telera rolls are slightly flat. Both types of rolls are available at Latin supermarkets.
Foods as rich and earthy as black beans and chorizo might work well with a lighter-style Bergundy Pinot Noir, but these tortas are probably best with a cool, malty Mexican beer like Negra Modelo or Dos Equis Amber.