1、看色(se)澤:良質豆腐(fu)干(gan)(gan),呈(cheng)乳白色(se)或淺(qian)黃色(se),有光澤;次質豆腐(fu)干(gan)(gan),比正常豆腐(fu)干(gan)(gan)的顏(yan)色(se)深;劣質豆腐(fu)干(gan)(gan),色(se)澤呈(cheng)深黃色(se)略微發(fa)(fa)紅(hong)或發(fa)(fa)綠,無光澤或光澤不均勻。
2、看(kan)質(zhi)(zhi)(zhi)地:良質(zhi)(zhi)(zhi)豆(dou)(dou)腐干,質(zhi)(zhi)(zhi)地細膩,邊(bian)角(jiao)整齊,有(you)(you)一定的彈性(xing),切開處擠壓(ya)不出水(shui),無(wu)雜質(zhi)(zhi)(zhi);次質(zhi)(zhi)(zhi)豆(dou)(dou)腐干,質(zhi)(zhi)(zhi)地粗(cu)糙,邊(bian)角(jiao)不齊或缺損,彈性(xing)差且易(yi)被折粘(zhan),切口處可擠壓(ya)出水(shui)珠;劣(lie)質(zhi)(zhi)(zhi)豆(dou)(dou)腐干,質(zhi)(zhi)(zhi)地粗(cu)糙無(wu)彈性(xing),表(biao)面粘(zhan)滑,切開時粘(zhan)刀,切口擠壓(ya)時有(you)(you)水(shui)流出。
3、嘗味(wei)(wei)(wei)(wei)道:良質豆腐(fu)干(gan),具有(you)(you)豆腐(fu)干(gan)特(te)有(you)(you)的(de)清香氣味(wei)(wei)(wei)(wei),無其(qi)他(ta)異味(wei)(wei)(wei)(wei),滋味(wei)(wei)(wei)(wei)純正,咸淡適口;劣質豆腐(fu)干(gan),有(you)(you)餿味(wei)(wei)(wei)(wei)、腐(fu)臭味(wei)(wei)(wei)(wei)、酸味(wei)(wei)(wei)(wei)、苦澀味(wei)(wei)(wei)(wei)等不良滋味(wei)(wei)(wei)(wei)。