In more recent years malt has been used as a supply of diastatic enzyme since it has better efficiency than brown rice seedlings (malt mizuame), it is currently manufactured by adding acid to the starch and hydrolyzing it (the acid saccharification method).
時代が下ると、発芽玄米より効率の良い麦芽が糖化酵素の供給源として利用されるようになり（麦芽水飴）、現在では、デンプンに酸を加え、加水分解して作られている（酸糖化法）。