I have aged a few rums in medium toasted American oak chips; first round was 2 weeks with 1.5% by weight in glass bottles with plenty of head room. I did want some oxidation.
I liked the results and didn't think any of them were close to getting over oaked.
What I have started now is 2% by weight in Worthy Park Overproof (medium ester count). Monymusk (low ester), Barbancourt Haiti Proof and Don Q white rum.
The plan is to taste and collect a 50mL reference sample of each at 2 weeks, one month, and 2 months, then compare and decide if further aging is desired.
My friend mentions ultrasonic baths for accelerated aging, and I have heard of sous vide/elevated temperatures.
In doing online research, and reading about those methods, I don't get a sense of the relative merits, and the flavor effects of the various methods.
Do any of you hobby distillers have some favorite methods, or any beginner friendly references to share?
Edit: Also, to get a wider range of possible flavors, any other wood chips I should try, and what would be the effect of lighter toast or heavier toast or charring?