Vegan Spinach Dip

1 pkg (300 gm/10oz.) frozen chopped spinach, thawed & drained.
2 cups vegan sour cream (see sour cream substitute recipes in this blog)
1 cup vegan mayonnaise (see  mayonnaise substitute recipes in this blog)
1/2 cup dehydrated vegetable flakes 
1/2 tsp each: salt, dill weed, garlic powder (or granules)
1/8 tsp turmeric
1 can (227mL/8 oz.) water chestnuts drained & chopped
3 green onions chopped (optional)

Mix all ingredients, cover and chill for 2 hours to blend flavours, stir before serving.

Note: 1 pkg of dry vegetable soup mix could replace the vegetable flakes, salt, dill weed, garlic powder, & turmeric, but check the ingredients, you would want them to be free of MSG, anything hydrolyzed, or hydrogenated