Spinach-Ricotta Mold

1 pkg. frozen chopped spinach
1 c. water 1 envelope unflavored gelatin
1/4 c. lemon juice
1/2 c. water
1/3 c. mayonnaise
1/4 c. sugar
1 c. Ricotta cheese
3/4 tsp. salt
1/2 c. celery, chopped

Cook spinach, drain thoroughly and cool. Heat the gelatin in water until dissolved. Add sugar, salt, remaining water and lemon juice to gelatin mixture. Stir gelatin mixture into mayonnaise. Chill until partially set. Beat the mixture. Add spinach, cheese and celery. Chill in 5 cup mold until firm.