Heat 1/2 cup vegetable oil in a small saucepan over medium-high heat. Add 2 tablespoons capers (patted dry) and fry until crisp, about 2 minutes. Remove with a spoon; drain on paper towels. Toss 1 minced small shallot with 2 teaspoons lemon juice in a large bowl; let sit 10 minutes, then whisk in 1/2 cup creme fraiche, 2 tablespoons horseradish (drained), 1 teaspoon each lemon zest, Dijon mustard and kosher salt and a few grinds of pepper. Add 4 small heads Little Gem lettuce and 2 heads red endive (leaves separated), 1 cup sugar snap peas (strings removed and sliced), 6 thinly sliced radishes and 1/3 cup chopped dill; toss. Top with the fried capers.