Crepes and Caviar

Name: Crepes and Caviar
Ingredients: 1 cup (8 fl. oz./250 ml) milk; 1/3 cup (3 fl. oz./80 ml) water; 1 cup (4 1/4 oz./120 g) all-purpose flour; 2 eggs; Kosher salt; 2 Tbs. unsalted butter, melted and cooled slightly, plus more for greasing; Extra-virgin olive oil as needed; 1/2 lb. (250 g) small Yukon Gold or red potatoes, thinly sliced on a mandoline; Crème fraîche for serving; Caviar for serving; Minced fresh chives and chive blossoms for serving