by czechcookbook - appetizer - September 12, 2013July 26, 2018 Fish Spread – Rybí pomazánka Ingredients: Makes: 6oz. Total time: 10 min. 1 can (about 4oz) of smoked sardines in olive oil 1 Tbsp butter 1 Tbsp yellow mustard 1/4 cup mayo pinch of salt chopped onions (optional)