The Creamy Ingredient You Need For Ultra-Moist Banana Bread (It's Likely Already In Your Fridge) - Tasting Table
Briefly

Sour cream is an essential ingredient for achieving soft and moist banana bread. Its thick texture and subtle tang enhance the flavor of overripe bananas, creating a rich profile. The high fat content in sour cream breaks down gluten in the batter, preventing dryness. When incorporated, it retains moisture better than milk or water, leading to a fluffy yet dense loaf. Additionally, its acidity activates baking soda for better rise and an even crumb structure, distinguishing it from other dairy alternatives.
Sour cream's thick, creamy texture and subtle tang complement the natural sweetness of ripe bananas, resulting in a deliciously rich flavor profile in banana bread.
The high fat content in sour cream breaks down gluten in the batter, leading to a soft, moist crumb that stays fresh for days.
When sour cream is folded into banana bread batter, it locks in moisture, resulting in a dense yet fluffy loaf that is rarely dry.
Sour cream's unique combination of fat and acid sets it apart from other dairy add-ins, activating baking soda and producing a finer crumb.
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