Squash tastes green
The squash looked ripe and was harvested in Sept or Oct, however some of it tastes green. Can anything be added to improve taste for cooking or making pie?
Certified GKH Gardening Expert
Unfortunately, this taste is permanent. This can happen if not let to ripen, AND if let to ripen too long.
This article will give you more information: https://www.gardeningknowhow.com/edible/vegetables/squash/when-to-harvest-squash-best-time-to-pick-winter-or-summer-squash.htm