Steam treated coffee husk is an adequate substrate for aroma production by C. fimbriata. Glucose addition was necessary for this purpose and the optimal concen- tration is :20 g/100 g d.m. The production maintained six days at its maximum, which was a significant im- provement when compared with results reported for other solid substrates [6]. The addition of leucine im- proved TV production by 58%, especially ester produc- tion, but the addition of a mineral salt solution was unnecessary. Steam treatment applied to the coffee husk probably brought all the minerals needed by the C. fimbriata. It could not utilize the fatty acids of soybean oil. The Gompertz model confirmed its accu- racy for describing the dynamics of flavouring com- pounds production in SSF.