Verjus is the juice of unripened grapes. It’s often used as a substitute for vinegar. Preserved lemon is a condiment used primarily in Indian and North African cooking. Both are available at specialty food shops. White anchovy fillets are available in the deli section of specialty food shops.
Assertive flavors, like fishy anchovies and bitter radicchio, can be toned down with juicy, fruity wines. Try a robust rosé, like one from Australia or Spain’s Rioja region.