how to use a double jigger

he strange name, with obscure origins, has done little to de-mystify the question that is - “what is a jigger?”. Simply put, jiggers are graduated glasses that help your bartenders make sure they’re serving the right quantity of liquor. This article removes the confusion around jiggers, and answers questions like how many ounces in a jigger with a simple guide and concise information.