|Love that golden orange color. It’s prettier in real life.|
If the herb you’re using is very fluffy, and as a result has a lot of air around it–imagine a jar of dry chamomile buds, for instance–you can fill the jar almost to the top with dried matter.
This not an exact science, so don’t get worked up about exact quantities. The only thing you should keep in mind in terms of measurement is that you’ll get less oil out than you put in. The herbs soak up a good bit of the oil, and don’t give it all back. Also keep in mind that you don’t need to make a ton of this stuff unless you’re planning on selling it, or doing a big Christmas project. Salve stretches a long way. A jam jar–the kind that holds 1 cup–is not too small for an experimental go at this.
Of course you should not use oil that smells rancid or looks funny. Smell your herbs and oils as you’re working with them! If you’re familiar with them, you’ll know easily that they’ve gone off.