3 beet sherry dressing Recipes

beets (about 1 lb), tops trimmed, pink grapefruits (about 2 1/2 lb), sherry wine vinegar, dijon mustard, extra-virgin olive oil, avocados, pitted, peeled , cut into 1/2-inch pieces, fresh pomegranate seeds (from 2 large pomegranates)

mayonnaise (must be full fat), sour cream, sherry wine (not cooking sherry), dried tarragon, finely crushed or 1 1/2 tbsp minced fresh tarragon, garlic powder, tabasco sauce , to taste, drops red food coloring or 2 -3 drops beet juice, milk , to thin dressing (optional)