Training - Less Space Alternative?

Chocolate's the cheapest way to train this skill, but takes up 2x2 space and that's more than half of my normal inventory when it comes to catering 10. Is there any inexpensive alternative that uses less space in the inventory?

Barley teas from Barry's pub are pretty good for size and cost and easy access.

Wanst in Vales. Barley Tea + Giant sided discount = 315g each.

don't forget to train on Wednesdays for that extra discount.

I use Grilled Shellfish and Baked Potato. It uses up what I get through leveling hoeing, and are 1x2. I know it's a really late response, but it only costs whatever the tool repairs cost.