if you can but, from my point of view, I think you have to re-formulate the DESIGN: a table is considered when it has more than 3 attributes; in the case of the coast because that belongs to tabla region
that has id
select from ingredientes
inner join comidaselva_ingredientes on ingredientes.id_ingredientes=comidaselva_ingredientes.id_ingredientes
inner join comidas_de_la_selva on comidaselva_ingredientes.id_selva=comidas_de_la_selva.id_selva
inner join comidacosta_ingredientes on ingredientes.id_ingredientes where ingredientes.nombre_ingrediente = "cebolla"
falteras make a inner join
wings other tables of the sierra and the coast