Herb-Crusted Pork Loin with Pistachios

The sweet, nutty, fragrant mixture of pistachios, garlic, lemon, and herbs runs through the heart of this pork loin. Try to buy roasted shelled pistachios. If you can’t find them, you will have to shell about 30 nuts to make ⅓ cup. The easiest way to toast them is in a microwave. Put the nuts on a plate and cook them at full power for 2 minutes. Stir and cook in 30-second intervals until they smell toasted.