Bring butter and cream to room temperature before mixing to ensure smooth, lump-free frosting with optimal emulsification and a light, fluffy texture.

Press fresh or thawed raspberries through a fine-mesh sieve to remove seeds and excess moisture, creating silky frosting while intensifying the pure raspberry flavor.

Beat butter alone for 2-3 minutes until pale and fluffy before adding other ingredients—this creates air pockets that result in a lighter, more voluminous frosting with better texture.

Add icing sugar in small batches on low speed to prevent powdery clouds and ensure even distribution, which prevents grittiness and creates a smoother, creamier consistency.

If your frosting tastes too sweet, add a tiny pinch of lemon juice or tartaric acid to enhance the raspberry's natural tang and prevent the frosting from tasting cloying on desserts.