需要发酵1个月，具体做法如下：
需要提前准备好的材料包括：紫葡萄2500克、白糖300克、盐10克、面粉100克。
1、买回来的葡萄先把有破损的挑选出来。
/iknow-pic.cdn.bcebos.com/728da9773912b31be6355c468918367adab4e100"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/728da9773912b31be6355c468918367adab4e100?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/728da9773912b31be6355c468918367adab4e100"/>
2、把葡萄放进一个大些的盆子里加入清水和适量面粉，用手顺着一个方向搅拌清洗。
/iknow-pic.cdn.bcebos.com/37d3d539b6003af390574a0f3a2ac65c1138b6f4"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/37d3d539b6003af390574a0f3a2ac65c1138b6f4?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/37d3d539b6003af390574a0f3a2ac65c1138b6f4"/>
3、洗净灰尘的葡萄再用淡盐水浸泡15分钟，清除表面残留农药。
/iknow-pic.cdn.bcebos.com/c83d70cf3bc79f3df6ab755fb5a1cd11728b2912"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/c83d70cf3bc79f3df6ab755fb5a1cd11728b2912?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/c83d70cf3bc79f3df6ab755fb5a1cd11728b2912"/>
4、之后把葡萄放阴凉通风出晾干表面水分。
/iknow-pic.cdn.bcebos.com/91ef76c6a7efce1b476159a5a051f3deb48f6513"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/91ef76c6a7efce1b476159a5a051f3deb48f6513?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/91ef76c6a7efce1b476159a5a051f3deb48f6513"/>
5、葡萄倒入盆子里加入白糖搅匀用勺子压破。
/iknow-pic.cdn.bcebos.com/95eef01f3a292df5047f3d7ab3315c6034a87325"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/95eef01f3a292df5047f3d7ab3315c6034a87325?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/95eef01f3a292df5047f3d7ab3315c6034a87325"/>
6、装入玻璃罐用保鲜膜封口。
/iknow-pic.cdn.bcebos.com/2cf5e0fe9925bc31bbe290f751df8db1cb137026"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/2cf5e0fe9925bc31bbe290f751df8db1cb137026?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/2cf5e0fe9925bc31bbe290f751df8db1cb137026"/>
7、在25-30度的室温里发酵1个月。
/iknow-pic.cdn.bcebos.com/0df3d7ca7bcb0a4662821a566463f6246b60af39"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/0df3d7ca7bcb0a4662821a566463f6246b60af39?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/0df3d7ca7bcb0a4662821a566463f6246b60af39"/>
8、用干净消过毒的细纱布把葡萄酒过滤一下。
/iknow-pic.cdn.bcebos.com/eaf81a4c510fd9f94bbbc3062a2dd42a2834a435"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/eaf81a4c510fd9f94bbbc3062a2dd42a2834a435?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/eaf81a4c510fd9f94bbbc3062a2dd42a2834a435"/>
9、倒出，完成。
/iknow-pic.cdn.bcebos.com/8cb1cb13495409233286f5119d58d109b2de49f6"target="_blank"title="点击查看大图"class="ikqb_img_alink">/iknow-pic.cdn.bcebos.com/8cb1cb13495409233286f5119d58d109b2de49f6?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="https://iknow-pic.cdn.bcebos.com/8cb1cb13495409233286f5119d58d109b2de49f6"/>
注意事项：
葡萄必须是红的发紫的才行，发青的做出的口感很差的，白糖比例看个人喜欢口感。
需要注意的是，发酵时间越长酒味越浓；葡萄酒酿好以后，放的时间越长，酒味越浓。葡萄酒酿好以后，要把葡萄籽，葡萄皮，还有发酵后残余的果肉都过滤掉。滤渣时用干净的纱布过滤就可以，滤渣的工具一定要严格消毒，不能用铁质、铜质等工具，不能接触不洁用具，避免带入细菌导致葡萄酒二次感染变质。本回答被提问者采纳
去年酿的很甜，今年特别辣，和时间有关系么？
追答有关系啊
追问时间越长越甜么