3 spinach lettuce grapefruit walnut Recipes

white wine vinegar, maple syrup, salt, peanut oil or 1/2 cup vegetable oil, walnut oil (optional), walnuts, finely chopped, fresh spinach, washed, dried , and torn into small pieces, heads boston lettuce, washed, dried , and torn into small pieces, grapefruit sections

head butter lettuce , limestone lettuce or 1 head bibb lettuce, torn into bite-size pieces, baby spinach leaves (or 1 head radicchio, thoroughly cleaned and stems removed), red grapefruit, peeled, ripe avocado, peeled and sliced, walnuts , pecans or 1/4 cup almonds, toasted, fresh grapefruit juice, champagne vinegar or 1/2 tbsp good-quality white wine vinegar, salt, chopped red onion, olive oil, fresh ground black pepper , to taste