Tomatoes stuffed with Vegetables

Description
In Romanian: Rosii umplute cu zarzavat

Ingredients

 * 3 boiled potatoes
 * 2 carrots
 * 1 parsnip
 * 1 celery root
 * 2 – 3 tablespoon peas (optional)
 * 1 chopped onion
 * mayo
 * tomatoes
 * salt
 * lettuce

Directions

 * 1) Boil all the vegetables except the onion, tomatoes and lettuce.
 * 2) Let cool then cube everything and mix with the chopped onion and salt.
 * 3) Mix the vegetables with mayo and then stuff the tomatoes from which the insides have been removed, with the mixture.
 * 4) Refrigerate.
 * 5) When serving, place them on a bed of chopped lettuce.