Complex sentence: This spirit, only just condensed in a refrigerating coil, is a white drink quite insignificant, but, after ageing in oaks for three years at least, the colour becomes light yellow, slightly amber-coloured, and the taste grows smooth.
Split into simpler sentences: This spirit, only just condensed in a refrigerating coil, is a white drink. After ageing in oaks for three years at least, the colour becomes light yellow, slightly amber-coloured, and the taste grows smooth.