What’s a food item that you open, but always struggle to use the full container ?

I always do this with pasta sauce. I only like a small amount and I can never use much more than half. I suppose I should freeze half.

As far as produce goes, I don’t think I’ve ever used an entire bunch of cilantro. Carrots and celery are also problematic.

I don’t mind spending money on food, but I do hate wasting it. Any tips for getting better at this?

Ay caramba! I think I’ve got enough suggestions. Thank you all!