化肥豆芽:采用化肥催长速生的豆芽,根短或无根,豆粒发蓝。如将一根豆芽折断,仔细观察,断面有水分冒出,有的还残留有化肥的气味。掺假干豆腐:掺豆渣、玉米粉做出的干豆腐,表面粗糙、光泽差、弹性差,折裂面呈不规则的锯齿状,可见粗糙物,还可看见玉米渣粒。充水油豆腐:正宗的油豆腐具有鲜嫩的油腻感,而充水油豆腐油腻差、粗糙。有的褪色,边色发白,用 Fertilizer sprouts: the use of fertilizers fast-growing bean sprouts, root is short or no root, blue beans. Such as a bean sprout broken, carefully observed, the section of water emerge, and some still smell of chemical fertilizer. Adulterated dry tofu: Doped bean dregs, made of dried tofu corn flour, the surface roughness, poor gloss, poor elasticity, fracture surface was irregular sawtooth, visible rough, but also to see the corn residue. Water-filled oil tofu: Authentic oil tofu has a fresh greasy feeling, while filling oil tofu oily poor, rough. Some fade, white color, with