Bread bran is a food additive. Bread crumbs are made from toast by peeling, slicing, drying at constant temperature, and then uniformly pulverizing.

Bread crumbs are generally available in supermarkets, dry goods stores in vegetable markets and online. You can also do it yourself. The manufacturing method is as follows:

1, cut the bread into small pieces, spread it flat on the plate, put it in the microwave oven, fire for 2 minutes, turn it over, beat 1 minute, and take it out until it is crisp (if it is not crisp, repeat the above actions);

2. Put the baked bread into a fresh-keeping bag and crush it with a rolling pin;

3. It can also be broken in a cooking machine, blender or grinder. This method should not take too long. Check the state for a few seconds and don't be too broken;

4. Crushing and sieving. If there are still large particles, continue the previous action until it can be sieved;

5. Finally, filter to a state like sand.