What is the black stuff that grows on cauliflower?

Online Answer
This discoloration is a result of oxidation. The longer the cauliflower is stored, the more likely the curds will oxidize, and discolor. The discoloration will appear in different stages, first appearing as a light tan or brown, then advancing in size and the color will change to a dark brown to black in color.
Related Questions 📌
Is it safe to eat reheated vegetables? It is completely safe to eat reheated vegetables which have been steamed, as long as the vegetables have been kept safely in the fridge, have not spoiled and are reheated properly..
In a microwave-safe bowl, combine the broccoli, cauliflower, carrots and water. Cover and microwave on high for 3-6 minutes or until crisp-tender.
Fresh cauliflower keeps quality for about 2 to 4 days at room temperature, and between a week and two weeks in the fridge..
If the cauliflower is soft, rubbery, or mushy, or if it's entirely covered with brown spots/mold, or if it smells sour/rotten- those are sure signs it's gone bad..
Directions
  • Place cauliflower florets in a large microwave-safe bowl with enough water to just cover the bottom of the bowl. ...
  • Cover bowl loosely with waxed paper or a paper towel and steam cauliflower in microwave on high until tender, 4 to 5 minutes.