They say that the definition of insanity is doing the same thing over and over again and expecting a different result. At least that’s what Albert Einstein said, and he was a pretty smart guy. So I’m not sure why, for the fourth year running, I hoped to find tasty hamentashen in my survey of bakeries in Jerusalem. But still, for you, dear readers, I persisted, sampling cookies from a dozen shops around town. I found the good, the bad and the downright ugly. I also confirmed something that all those with taste buds have known for years: Butter is better.Though many bakeries offer parve or non-dairy hamentashen for kashrut reasons, those made with God’s gift to the culinary world – butter – are far superior to the margarine-laden equivalent.