Non toasted American oak shavings.
Infuse a roughly 30ml per 750ml bottle of spirits until it develops your preferred level of "woodiness". Then strain the shavings and bottle your spirits.
Factors influencing the time of oaking required:
There is no "right or wrong" quantities of shavings or specific periods to infuse. You can add more for a more woody taste.
1. The higher the temperature - the quicker the extraction of the woody aromas.
2. The stronger the alcohol - the quicker
3. The more shavings you use - the quicker
First use the colour as a guide and then on regular intervals, nose and taste the product until you've reached your preferred level of "woodiness"