ingredients
[{"amount":"1","unit":"cup","name":"unsalted butter, softened \u26a0\ufe0f MUST be room temp"},{"amount":"1\/2 to 1","unit":"cup","name":"sour cream, room temperature \u26a0\ufe0f MUST be room temp (\u00bd cup standard \/ 1 cup for extra tang and richness)"},{"amount":"4-6","unit":"cup","name":"powdered sugar, sifted"},{"amount":"1\/2","unit":"tsp","name":"salt"},{"amount":"2","unit":"tsp","name":"vanilla extract"},{"amount":"1-2","unit":"tbsp","name":"instant coffee dissolved in 1 tbsp hot water \u2014 cooled (optional \u2014 for coffee flavor)"}]
steps
[{"text":"Beat butter until smooth."},{"text":"Add sour cream and mix until combined."},{"text":"Add powdered sugar gradually until frosting is thick and spreadable."},{"text":"Mix in salt and vanilla."},{"text":"Adjust: add more powdered sugar if too thin, a little more sour cream if too stiff."}]