Fish oil is the fat or oil that's extracted from fish tissue. It usually comes from oily fish such as herring, tuna, anchovies and mackerel. Yet sometimes it's produced from the livers of other fish, as is the case with cod liver oil.
A piquillo pepper is a type of small red chili pepper with a shape similar to a triangle that is grown in Spain. It has a flavor that is slightly sweet and spicy, but it is not a truly hot pepper.
Pikipek is the Woodpecker Pokemon found early in Pokemon Sun and Moon. Like the bird its modeled after, Pikipeks drill holes in trees in search for food. They can peck 16 times a second and can shatter stone.