I ordered a Greek salad in a pub ( England)we visited a few weeks back. They had done a lovely take on the bell peppers. They were cut in strips and quite soft and tangy so I’m assuming they had been pickled. They were delicious and really complimented the feta, tomatoes etc. What would a good way to pickle the peppers be at home? Stupidly I did not ask the chef to tell me how he had done them