Bletting

The medlars were bletting.

Ziri was bletting the medlars to make a jam.

The medlars started browning and bletting on the tree.

Bletting medlars is a little bit of a challenge.

The medlars are bletting.

The process of letting medlars to ripen is called bletting.

The process of letting medlars to soften and become edible is called bletting.

Pick the medlars when they're mature but not ripe and leave them in a dark corner to soften. This is called bletting.