Multiple servings for canned goods?

So I'm working on a mod that let's you can more produce at once. Currently I can f.e. make six strawberries into six canned strawberry jams. However, I would like to also have the option to choose just how much cans I want to make - just like oversized crops have Small Batch, Medium Batch and Large Batch, or normal recipes have Single Serving, Family Serving etc., I would like to do that for normal produce too, but unsure how. I'm not really skilled with mods, the most I did before was speeding up programming etc.

Thanks in advance for any tips!