This game is very simple but will require some shopping and some creativity.
First of all, when buying baby food, buy mixed ingredients not just one ingredient per jar or pouch. Mixed ingredients will be harder to guess and will lead to discussion or higher competition. Buy a mix of fruits and fruits, fruits and veggies, and of course some meats.
You can decide whether you want to award a whole point or fractional for a partial guess.
If you are going to be taking pictures, make sure to capture the expression immediately after the tasting