It depends on what is in that jug. Compost for the garden should NEVER contain meat products.
Ingredients for a good compost pile.
The basic thing is to build a compost pile so you can take organic material and decompose it sufficiently so it is usable as nutrition in the garden. Once this is done, you just till it into the soil. The key to a good garden is having soil that is rich in organic matter and adding compost is a great start. A compost pile can be as simple as just a 3 foot by 3 foot area where you pile stuff, a three-sided bin made of wire fencing or as elaborate as a high-dollar compost "cooker." I have a plastic bin one my mom got me as a birthday present one year.
It kind of looks like an oversized black trash can. I just dump my kitchen scraps and garden clippings in there and it does the rest.
Great resource for composting information
Read the "Compost 101," "Compost Ingredients" and "Build a Compost Pile" articles to get a good idea of what you need to do. It's not hard by any means so with a good understanding of what you're trying to do, you can easily use your compost to have a spectacular garden next year.