I'm new to this forum and this question did not seem to fit the existing "Extract" categories. I want to first decarboxylate cannabis flower, then extract the THC with pure ethanol. I have read various ways to decarboxylate flower by first grinding it, then heating it, either in the oven, or in a sealed container placed in boiling water for an hour. I have tried the boiling water method twice now. Dried flowers were placed in a tightly sealed Mason jar and then boiled in a large canning pot (not a pressure cooker) for an hour. While doing this, there is a strong odor of weed from the boiler. Why? I fear that the terpenes and THC are escaping somehow. I don't want this to happen. Any thoughts? Clues? Is there a better way to make a THC / alcohol extract from flowers?