25 or 30 lg. marshmallows
1/2 box blackberry Jello
1 (8 oz.) carton Cool Whip
1 can blackberries
1 tsp. lemon Jello (opt.)
25 graham crackers

Place marshmallows in large pan. Drain juice off of blackberries then add enough water to juice to make 2 cups liquid. Add liquid to marshmallows, set on stove and melt or dissolve marshmallows. Add blackberry and lemon Jello that has been mixed with 2 tablespoons water. Let mixture stand until starting to jell, then add 8 ounce carton Cool Whip.