When filling the bucket every couple inches of scrapes sprinkle some bran. The tricky part is just like sauerkraut you have to make sure air does not make contact with the scraps or mold will form. What you want to see is just a white “mold” form. You can use a plastic bag and some kind of weight. I got tired of that and I bought one of those lids for a five gallon bucket that has rubber sides creating an air tight seal.