If you only keep one bottle of bitters on your bar cart, make them Angostura, the workhorse of bitters. They're earthy and herbal, with a touch of orange and cinnamon. Bitter but light enough to not overwhelm. Good for Old Fashioneds and Manhattans and making a quick spritz with vermouth and seltzer.
Contents: 4-ounce or 6.8-ounce bottle of Angostura bitters