A composition comprising a thermostable hydrolase and a temperature sensitive inhibitor, wherein the hydrolase is a serine protease, and said inhibitor is of vegetable origin or a recombinant, semi-synthetic, or synthetic variant thereof, and wherein said thermostable hydrolase and said temperature sensitive inhibitor form a hydrolase-inhibitor complex at a temperature below T1, wherein said inhibitor inhibits the activity of said hydrolase in said complex at a temperature below T1 and dissociates from said complex at a temperature of about T1 and T1 is the temperature at which the hydrolase-inhibitor complex dissociates and is at least 60° C.