Cooking on Gas?

In the UK, soaring electricity and gas bills have generated a wave of advice on cheap methods of cooking (https://www.theguardian.com/money/2022/aug/27/best-ingredients-and-appliances-to-save-cash-when-cooking). Electric cookers are the most expensive devices. Air fryers, slow cookers and microwave ovens are all cheaper to operate. Families have been urged to batch cook; use the right-sized pan with a lid; simmer rather than boil and go for recipes that use a single pan. People are also advised not to over-fill their kettles. It has been claimed that households could save up to £600 per year, by switching to more efficient cooking methods. This, however, doesn't get near to compensating for the increased energy costs. Further, people 'on the bread line' haven't got the money to buy new cooking equipment or the ingredients to batch cook (which generally have to be frozen). Even 'well-heeled' folk will not benefit, in the short term, by purchasing new, more efficient cooking devices (most such items would have to be used for years to recover the outlay). The tips are useful but they are essentially fiddling on the margins. They not even pertinent to all!