I assume in this way one gets also the nutrients - as a good side effect - that have passed into the water (if there were any at all, I could certainly imagine). I occasionally eat mushrooms out of the jar that also has water in it, so one should probably always use that. Although that doesn't look particularly tasty.As @Lou mentioned I use the brine from jarred olives, capers, jalapenos, banana peppers to saute onions, garlic, any other veggies instead of just using water or oil - it adds an amazing taste and I am not sure how much oil, from the olives, would be in the brine but there is enough moisture/fat to make sauteing easy and tasty.
The same oil in the avocado oil bottle as in the avocado? But may be with some unwanted ingredients in the oil bottle or changed oil during processing?It's the same oil, just without the solid stuff and the water.