This pork tenderloin recipe is the most tender, flavorful pork roast you'll ever have. Unusual use of pears and pear nectar are perfect here. Ready in no time, but even better left to slow-finish in a low oven. Pear nectar is readily available where any canned fruit juice is stocked, but if you can't find it, purchase healthy stage 2 baby food pears (yes, really) and add water until desired consistency is reached.