Sour Cream Is The Answer For Better Key Lime Pie - Tasting Table
Briefly

The addition of sour cream to key lime pie enhances its creamy texture and balances the acidic lime flavors, enriching the dessert without overpowering sweetness.
Using sour cream in key lime pie creates a luscious custard filling that holds its structure, providing a perfect blend of tartness and creaminess from traditional ingredients.
Read at Tasting Table
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