Hungarian oak cubes are easy to work with adequate wood impact in a matter of 7 to 14 days of contact time. Medium toasted. Toasting is a process measured in time and temperature, not color. Differences in darkness or lightness of identically toasted woods are due to natural differences in the wood before toasting, such as grain tightness and moisture, each of which falls into a range of values that meets our standard. 1 to 2 oz is recommended per 5/6 gallon carboy of red wine and some whites.