Combine crab, asparagus, eggs, peas,
oil, 1/2 tsp (2ml) salt, pepper, tarragon, mayonnaise and lemon
juice, tossing lightly to blend. Chill. Peel tomatoes, cut a thin
slice from tops and hollow out leaving a good thick shell to hold
filling. (Save tomato pulp to add to macaroni dishes, meat loaf,
spaghetti sauce, etc). Sprinkle insides of tomatoes with salt and
turn upside down on paper toweling to drain. Chill. Fill tomato
shells at serving time using 1/3 to 1/2 cup (80-125ml) crab filling
per tomato. Set on lettuce and garnish with parsley.