How to choose the best:
Cauliflower

Touch

Look for firm heads surrounded by tight leaves – and keep an eye out for any soft spots, which can be a sign rotting.

See

First off, don't worry too much about color. A yellower head of cauliflower has simply revceved some more direct sunlight – but that really doesn't have a big effect on flavor at all.

More importantly, avoid heads with yellowing leaves or blacks spots, which can be signs of age or rotting, respectively.

Some more details:

How to store

Cauliflower does best in a humid environment, so try wrapping in a moist cloth or paper towel before storing in a plastic bag.

When it's in season

Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec.