The Science of Homemade Salad Dressings: Quality and Shelf Life
The Reality of “Shelf Life”
When it comes to homemade dressings, there is a big difference between pantry-stable store-bought dressings and fresh, homemade ones.
- Commercial Dressings: These contain professional-grade preservatives, stabilizers, and emulsifiers, and are often pasteurized and bottled in sterile environments, allowing them to last for months.
- Homemade Dressings: These generally lack those industrial preservatives. Their shelf life is dictated by the ingredients used:
- Oil-based vinaigrettes (olive oil, vinegar/lemon, dried herbs) can last in the refrigerator for 1–2 weeks.
- Creamy dressings (containing dairy like buttermilk, sour cream, mayonnaise, or yogurt) are much more perishable. These should typically be consumed within 3–5 days to avoid bacterial growth.
Tips for Making (and Storing) Your Own
You can absolutely make a restaurant-quality dressing at home that is healthier and more delicious. Here is how to do it safely and effectively:
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