Packet says 1tsp rice to 1tsp milk. We've just tried it with 1tsp rice to 3tsp milk and added a little veg puree. He thought it was yummy (as did DH lol) and to be honest it does take away the horrible powdery taste that formula tends to have. So... we have a vehicle to get more liquid into the baby while I'm at work - how runny works well?