Many Uuni owners prefer not to clean their Stone and allow the high Uuni temperatures to burn off any excess food. 


If you need to you can scrape off any excess with a spatula or your Uuni Peel. If your Uuni Stone requires washing, use warm water only and dry thoroughly by placing in a warm oven (60°C/140°F) for 2 hours OR trying turning your stone over and cooking on the other side - you should find that the high heat will clean the stone for you.