As we're DIYing a full house renovation we've been without a functioning kitchen for 12 months 😆 So no boiler, hot water, tap, oven/hob.
Initially it wasn't too bad as we're relocating the kitchen to a different room, but as the kitchen we inherited when we bought the house was 60 years old, everything soon began to fail (boiler, tap, undiscovered leak under the sink which had obviously been going on for years, causing the joists to collapse).
Cooking has been fine. On a previous renovation we borrowed a full size camping hob from a family member, but this time we invested in two plug in induction hob and two airfryers in addition to our microwave.
As others have said, it's the washing up that's the killer. We've had a huge Belfast sink in situ in the new kitchen since October, but we have to get (cold) water from a temporary tap in the downstairs cloakroom which we then boil in the kettle. We have two washing up bowls side by side in the sink, one for washing, the other for rinsing. It took me a while to remember not to empty into the sink, but to take outside to the nearest drain.
Luckily no DC here. Some days I honestly wish we'd never started, but hopefully the end is in sight now!
Hosing the washing up now the weather is better or better still, paper plates/cups is the way to go, imo. Lots of BBQs and salads too.