⭐ Greek Yogurt (Best Nut-Free Option)
1 tablespoon per egg yolkGreek yogurt works well because it has a comparable acidity level and thick, creamy consistency similar to sour cream, which helps maintain the emulsion in Hollandaise sauce. The live cultures contribute to the tangy flavor that balances the richness of the butter and egg yolks.
To ensure success, use full-fat Greek yogurt and whisk it in gently at a low temperature to prevent breaking the emulsion. Avoid adding it too quickly or at high heat to maintain smoothness.
Compared to sour cream, Greek yogurt may impart a slightly more pronounced tang but will keep the sauce stable and creamy, closely mimicking the original flavor profile.