Zucchini in Oil (Zucchine Sott’Olio): A Tangy Italian Preserve

Pro Tips for the Best Zucchini in Oil

• Do not overcook the zucchini: The zucchini should be tender but still firm enough to hold its shape after boiling. Overcooking will result in a mushy texture that does not preserve well.
• Do not skip the salting and resting step: Zucchini has a high water content. Salting and resting draws out excess moisture, which is essential for maintaining a firm texture in the jar and preventing the preserve from becoming watery.
• Sterilise jars properly: Use the boiling method (10 minutes on the stove) or the oven method (20 minutes at 110°C / 225°F). Only use the dishwasher method if you are certain it reaches a sufficiently high temperature.
• Experiment with herbs: Feel free to add other fresh herbs to the jars—oregano, basil, or rosemary all work beautifully alongside or in place of the mint.
• Add some heat: If you enjoy a little spice, add a pinch of red pepper flakes to each jar for a gentle kick.
• Ensure complete oil coverage: The zucchini must be fully submerged in oil to prevent spoilage. Press down gently if needed and top up with extra oil before sealing.

Frequently Asked Questions

• How should I serve zucchini in oil? It is commonly served as an antipasto with crusty bread, alongside grilled proteins, or as part of a full meal. It also makes a wonderful addition to sandwiches with Italian meats and cheeses.
• How do I sterilise jars? You can boil the jars on the stove for at least 10 minutes to kill any bacteria, or heat them in an oven at 110°C (225°F) for 20 minutes. Ensure the jars are completely dry before filling.
• Can I make zucchini in oil with other vegetables? Yes. In Italy, this preserving method is also used for eggplant, mushrooms, artichokes, and other vegetables—simply adjust the boiling time as needed.

Storage Instructions

While marinating, the jars of zucchini in oil should be kept in a cool, dry, and dark place for the full month. Once opened, store the jar in the refrigerator, where it will keep for up to 7 days. Always use a clean utensil when removing zucchini from the jar to prevent contamination and extend the shelf life of the remaining preserve.