Old sour

An "old sour" typically refers to a cocktail characterized by a tart, often slightly aged, flavor profile, built upon a base spirit, citrus juice, and a sweetener. The specific ingredients and proportions can vary, leading to regional and individual variations, but the defining characteristic is a deliberate emphasis on sourness and the incorporation of flavors that suggest maturation or a longer, more complex development.

The term doesn't refer to a rigidly defined recipe, but rather a conceptual approach to cocktail construction. It distinguishes itself from standard "sour" cocktails by suggesting a deeper, more nuanced sourness. This can be achieved through several methods:

• Aged Spirits: Using aged spirits like whiskey (e.g., bourbon, rye), rum, or brandy adds depth and complexity to the flavor. The barrel aging process contributes notes of vanilla, caramel, oak, and spice that complement the sourness.

• Citrus Selection: Choosing specific types of citrus, or even allowing citrus juices to briefly rest (although not to the point of spoiling), can impact the tartness and overall flavor. Some variations might use less sweet citrus or a blend of different citrus fruits.

• Sweetener Adjustment: The sweetener in an old sour is often carefully balanced to counteract the tartness without completely masking it. Honey, maple syrup, or demerara sugar syrup can add unique flavor nuances compared to simple syrup. The amount used will depend on the desired level of sourness.

• Bitters: Aromatic bitters are often incorporated to enhance the complexity and balance the flavors. Different bitters will bring different notes (e.g., orange bitters for brightness, Angostura bitters for spice).

• Time/Maceration: In some interpretations, components may be macerated together or the finished cocktail allowed to rest briefly before serving to allow flavors to meld and deepen.

The "old sour" concept emphasizes a balance of flavors, leaning towards tartness and complexity, and utilizing ingredients that contribute to a richer, more layered drinking experience than a standard, simpler sour. Its identity relies on the interplay of aged base spirits, carefully chosen citrus, and thoughtful sweetening to create a uniquely sour profile.