This tart is pleasantly limey, with a delightful pistachio-forward shortbread crust. It requires minimal baking, but has a beautiful presentation, with fresh raspberries adding a nice touch. You can find shelled, raw pistachios at the grocery store, but roasted, salted shelled pistachios will work just fine. Look for limes with smooth skin: They have thiner skins, and will yield more juice. Garnish with chopped pistachios and whipped cream to offset the tartness from the curd and the raspberries.