I can't even find endive at the grocery store. I feed my dragon kale and collards mostly. I grow them in my garden plot at the community garden. So, his greens are pretty fresh. I have not even considered trying to grow other greens. But, maybe if you have a place to grow your greens whether indoors or on a balcony or patio, maybe you could look into growing your own. If you can grow escarole, as well, that might be a suitable addition. It's another green I can't find at the supermarket.
Is the product that you are seeing at the grocery store and labeled as chicory endive? If so, have you talked with the produce manager about it?
I wonder if any of these links will help with answering your question:
The word frisée, along with chicory, endive, and escarole, is at the center of one of the most baffling culinary naming enigmas.
www.thespruceeats.com
Endive is a member of the chicory family, which includes radicchio, escarole, frisee and curly endive. It has a crisp texture and a sweet, nutty flavor with a pleasantly mild bitterness — great served raw or cooked.So Special...It's Grown TwiceEndive is one of the most difficult vegetables in...
endive.com
Endive or Chicory? If you’ve ever found yourself wondering which you should use in a recipe, you’ve come to the right place.
www.gardeningknowhow.com
Okay, I posted this and it looks like the link to gardening know how posted as stack path. I just wanted to let you know. I've been a subscriber to Gardening Know How for a while, there is usually good information depending on the gardening season.
