Can't be. Pressing grapes directly into juice is just grape juice, not a substitute for vinegar.
Grape juice production method:
Preparation materials: 150g of grapes, water, honey, mint, a little
1, grapes and mint washed.
2, peel the grapes.
3, cut the grapes with a knife and remove the seeds.
4, add a little water.
5. Add mint.
6, break it with a cooker.
7, put the beaten juice into a sieve and strain.
8, add a little honey to the juice and enjoy.
9, finished.