From the government-certified Kirkland Signature tequila to Kirkland's authentic Italian balsamic vinegar ... And when it comes to Italian extra virgin olive oil (EVOO), Costco is no slouch.

To start, you should be looking for extra-virgin olive oil, as both Emily Lycopolus, olive oil sommelier and author of The Olive Oil and Vinegar Lover’s Cookbook, and Nancy Harmon Jenkins ...

Add the balsamic vinegar, honey, mustard, dill and salt and pepper to a bowl and whisk. Slowly add the extra virgin olive oil while whisking and continue until emulsified.