PROBLEM TO BE SOLVED: To obtain granular swollen red beans free from cracking grains to make outer appearance good, and enabling making bright bluish purple boiled rice containing red beans, only by boiling together with rice without performing preliminary work such as soaking raw red beans in water to swell followed by boiling once to remove harshness.SOLUTION: The granular swollen red beans having 700-780g/L bulk density are obtained by pressurizing and heating raw red beans at a gauge pressure of 0.4-0.65 MPa with 180-210°C superheated steam followed by releasing to under atmospheric pressure.COPYRIGHT: (C)2011,JPO&INPIT【課題】生小豆を水に浸漬して膨潤させた後、一度煮て、灰汁を抜くというような下ごしらえ作業を行うことなく、米と一緒に炊飯するだけで、粒が割れずに見栄えが良く、また明るい紫紺色をした小豆入りご飯を作ることができる粒状の膨化小豆を得る。【解決手段】生小豆をゲージ圧力0.4~0.65MPa、温度180~210℃の過熱水蒸気で加圧加熱した後、大気圧下に放出して、かさ密度が700~780g/Lである粒状の膨化小豆を得る。【選択図】なし
