@icanboogieboogiewoogie
My mum used to leave lent food to our own conscience.

I always think that Lent is a time to concentrate on God (that was why Jesus went int the wilderness - to get away from everyday cares).
If all you can think of is "I could kill a chocolate digestive, you aren't spending much time with the Almighty.
In a Barbara Pym novel, the heroine is making her tea (i.e. main meal). It was a lamb chop, some peas, and a grilled tomato. That's it. It brought home to me the sheer quantity of what we eat. Even when I was young, cauliflower cheese was a meal, maybe with some peas
I, too, am always struck by how modest the meals in Barbara Pym's books are. In one she gives a hungry male guest a poached egg (one) for his tea.
I think, as someone said earlier, it was a "waste not, want not" culture, and people didn't;t eat form greed. There was still a lot of rationing for many years after the war - you could generally get plenty of turnips and potatoes, but that was that.
Anything with a strong flavour (eg sardines) must have seemed like manna from heaven in an ocean of blandness.