I soaked 4oz of medium toast French oak with 5 jiggers of Beam's Black 8 year old bourbon the whole time my dark ale was fermenting. I put them in a tight lidded plastic container in the fridge for that time.
The chips soaked up 2/3 of the bourbon. I poured them through a grain sack into secondary. Then tied off the bag & dropped it in,racking the dark ale onto them. I let it sit for 8 days.It got fairly strong too. It's been in the bottles 10 weeks today. 2 weeks ago,I put a few in the fridge with some others for labor day. I drank a couple yesterday evening while we watched videos. It was clearer,with good carbonation & a creamy 2" off white head.
The aroma was smooth,light bourbon. The taste was a smooth,lightly toasty bourbon flavor with an oaky vanilla sort of creaminess. I think next time I'll toast some American oak. That would seem to me to get better oak flavors. But the flavors from the French oak & bourbon in this one has finally gotten out of the forefront taste-wise,so the malt can shine through more.