Groceries are going up in price all the time. I love the tips about cheap meals, but it isn't always what people can/want to do. I was doing a quick shop online at Sainsbury's yesterday because I was too disorganised to drive to Lidl/ALDI and I started thinking about ways to economise without necessarily resorting to beans on toast (although have you seen the price of Heinz baked beans now? £1.40 per tin! I'm not buying those).
So, I'll start:
Chicken breast 1kg is £6.49, which makes 2kg £12.98
Chicken thighs, skinless and boneless 2kg is £12.29
Chicken thighs, skin on and bone in 2kg is £4.50
Roast the chicken thighs in the oven, remove bone and skin, and you've probably saved £6 per kg by the time you account for the skin and bone.
Butternut squash is £1.50 per kg. Frozen butternut squash is £1.98 per kg, which is actually cheaper by the time you've accounted for the pith/seeds and skin, and it is really nutritious and useful for curries, stews, etc.
Obviously, bulking out curries and stews, etc., with lentils is good.