Unpaid training 20 hours

Generally if you feel enthusiastic about a job it’s worth giving it a go and seeing what you can make of it. Isn’t this below the minimum wage though?

Hi,

I applied for a job at World of Waffle and the manager/owner contacted me directly for an informal interview. When I went, it was less of an interview, but her telling me what my job really was, what I would be doing, my rates and everything. This is my first job but I didn't think I was being naive.

She told me that I'd be earning £7.28 and that she's still unsure of how many hours I'll be doing, but it will be around 12 hours a week, due to there actually being an overstaffing issue. Weird. She also disclosed that I will be doing 20 hours of unpaid training just for cooking waffles, pancakes and serving milkshakes and ice cream. I just thought it was a bit unreasonable. I went there to shadow a current employee for around half an hour and there was also another girl doing a bit of her unpaid training, and I kind of do see why she would think 20 hours of training is reasonable since they were a bit clueless. But I would call myself an okay cook, and I don't think turning pancakes/waffles is difficult. They were not even wearing gloves and the place was a bit stinky ngl, could've been one of them but I'd say the area wasn't really clean.

Unfortunately, I am quite desperate for a job, I don't want to risk asking her to lower it to 10 hours. It'd be great if she could or else I'd be losing £150 which I really need since I am going to Uni this year and it's going to be difficult with the cost of living crisis going on.

There weren't a lot of customers so I'd understand why she wants the money instead of paying her employees. But honestly, sitting around munching on waffles doesn't seem to hard, so I don't know why anyone would have to do that damned 20 hours of training. It's unbelievable.

Thoughts/advice?