Marinated Watermelon with Whipped Feta


Champagne vinegar


small shallot, minced


2-inch piece of ginger, peeled and finely grated


plus 3 tablespoons extra-virgin olive oil


Kosher salt


seedless watermelon, peeled and cut into 4-by-1-inch rectangles


tablespoon pink peppercorns


teaspoons black peppercorns


sumac


cayenne


feta cheese, preferably Greek


lightly packed basil leaves, torn


lightly packed mint leaves, torn


lightly packed tarragon leaves, chopped 


Flaky sea salt