People often call this white covering "carrot blush" or "white blush." This may be mistaken for mold, but it's really simply the carrot drying out. There is a lot of water in carrots. This white covering will develop as they begin to drink less water. Your carrots need water, period!
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Carrot blush is no reason to toss out your carrots. Soaking the carrots in cold water for around 10 minutes can bring them back to their fresh condition. The carrot will be rehydrated and the white covering will be removed. You may still consume the carrots after soaking them, regardless of whether they keep their white covering or not.
source: Recipes for a Healthier Season
I used to feed the hens our carrots when they looked like this, but now I'm thinking about keeping them! When veggies start to appear less than fresh, my go-to method for preserving them is to roast them in a little olive oil and use them as a side dish or to make a soup. With any luck, you were able to use this piece of advice to cut down on waste going forward.
