The Coca Cola is a good example. In my country, it's price jumped in the past few months by around 50%. Unfortunately, the alternatives did the same, but not by so much.
This made me stop in middle of the shop and discuss with my wife "Wasn't this cheaper? Like, a lot cheaper?" Naturally, my salary wasn't increased in order to counter this price inflation so we simply stopped buying all of these things like Coca Cola unless they're in a sale where the price is near the original or lower.
We also started to make some things by ourselves. For example, it's much cheaper to buy a 2kg bag of apples than buying apple juice now. I throw the apples in a shredder, get the juice and use the leftovers to make a pie.
It's also much cheaper to buy a huge bucket of white yogurt and some random discount fruit and make our own fruit yogurt than buying a fruit yogurt directly. I like to add things like nuts and honey into it as well and it's still cheaper while being healthier and tastier.