3 leek and fennel mashed potatoes Recipes

leeks (white and pale green parts only), quartered lengthwise, then finely chopped, salt, unsalted butter, yellow-fleshed potatoes such as yukon gold, fennel bulb (sometimes called anise; 1 1/4 lb), stalks trimmed flush with bulb, bulb halved lengthwise and thinly sliced crosswise), low-sodium fat-free chicken broth, milk, heated, black pepper

olive oil, leeks , cut into 1/4-inch pieces, fennel , cut into 1/4-inch pieces, plus 2 tbsp of the fronds, kosher salt, mashed potatoes, low-sodium chicken broth, crisps or crackers (optional)