Kushiage is a meat, vegetable or seafood skewer covered with breadcrumbs and deep fried in a oil. It is eaten nationwide in Japan but it is considered as the local specialty of Osaka. Ingredients can be pork, beef, shrimp, scallop, quail egg, ham, eggplant, onion, shiitake mushroom and etc.
There is a strict rule to eat the kushiage in Osaka. Kushiage should be dipped into a sauce based on Worcestershire sauce which is in a pot, but you can only dip once. The second dip is totally prohibited due to hygienic reason, the sauce will be dipped by other customers too.
Unfortunately sake does not match with kushiage, therefore should be accompanied with beer or chuhai; Japanese cocktail based on shochu.