Lesley, there is certainly a difference in taste. Once I'm finished making dinner and my palate isn't overwhelmed any longer with the flavours of that, I'll put a more thorough explanation together. I was very pleased with the test as the conditions were perfect. I didn't have any mishaps, no accidental burnings, scorching or any such thing. So, there was nothing much to account for the difference other than the method of cooking. On the surface the propane syrup tastes lighter with brown sugar notes while the wood syrup has more depth of flavour with (believe it or not) a definite cinnamon finish. Weird.