Organic Soy Milk Cream Stew From Scratch (オーガニック豆乳クリームシチュー)

Ingredients:
300g (10.6oz.) chicken breast w/o skin
1/2 (150g=5.3oz.) carrot
1 (200g=7oz.) onion
1~2 (300g=10.6oz.) potato
300ml water
consomme cube (or bouillon cube) to make 300ml soup
1 bay leaf
200ml soy milk or milk
1 tbsp. potato or corn starch & 1 tbsp. water
salt and pepper
parsley flakes *if you like