Il Buco has been a Manhattan insider’s restaurant for the 12 years it’s been open. Now you can have a taste of this restaurant at home: Il Buco Alimentare packages and sells olive oil, balsamic vinegar, sea salt and more. Il Buco’s fennel pollen is an insider’s ingredient—still fairly obscure and expensive, but a favorite of chef’s looking for a new flavor…the stealth ingredient in their porchetta…