Kohlrabi n tomato soup

Heat oil in a cooker, add finely chopped garlic and onion... saute for 2 mins and then add roughly chopped tomatoes and kohlrabi... cook for 2 mins and then add 2 cups water, salt and pepper to taste. Cover lid n cook for 3 whistles.. let it cool

When cooled take out the veggies and stock, blend to a fine liquid... pass the blend mix through a sieve to strain out any solid particles from the veggies... then reheat the soup and serve hot.