This is a very strong scent. Very true to a bitter coffee smell. I am currently testing it. I made a straight coffee candle using the 1 ounce to a lb to igi 4630. It was way to much. I made a "vanilla cappuccino" using half ounce of cake bake and half ounce of coffee. Still to much. I am fixing to test carmel popcorn which is buttery caramel smell and coffee 3 to 1 ratio. The fo's alone the coffee is still a tad much. I will rereview once poured and tested. I think this coffee fo is the start of something I just need to find out the proper ratio for a subtle hint. I'm thinking just a few drops mixed with a vanilla scent. My husband loves all of the test I have done. The one of coffee and cake bake you dont even have to light it it smells the living room not lit. So that tells you how strong it is. The bad reviews are simply people not using this oil properly I believe. I would advise anyone to just buy the sample. Start off small with it and add up to achieve your liking. I have went backwards and did strong now I'm tapering down. If this current test with the 3 to 1 carmel corn/coffee doesnt pan out for me. I will try 1 ounce of a vanilla fragrance to literally a drop of this coffee. I hope this helps someone trying to achieve a "coffee shop" "cappuccino" type candle.