Then cover with about a 1/4″ of olive oil and a lid and freeze. There is no need to dispose of unused fresh basil, nor do you need to freeze it or dry it. AubreyP8. Panda B. Keep in mind that methods for preserving food in olive oil will vary depending on whether the food is to be kept for a short time in the refrigerator, (e.g. How long would fresh basil olive oil keep? 3 Answers. I make the pesto, fill 1/2 cup or 1 cup jars to about 3/4″ from the top. How to Store Fresh Basil in Olive Oil. Every summer my garden is overflowing with fresh basil which we often use in tomato salad, pesto, bruschetta, or to make this simple basil oil that’s delicious on EVERYTHING!! And because it’s just 5 ingredients – extra virgin olive oil, garlic and basil, salt and crushed red pepper flakes – it’s naturally dairy-free, Whole30 approved and vegan. Stuff the leaves in a blender packing them pretty tightly. 2-3 weeks), in a freezer (for up to 12 months) or to be stored at room temperature in a pantry or cupboard (for 1 – 2 years or more). Starting at $15, these can get very pricey, and they usually have a more intense taste. I am making a dipping sauce with olive oil and fresh basil by slightly cooking the herbs in the oil, then cooling and storing it. You could wash them but best results are obtained when the leaves are perfectly dry. For more of a finishing oil—to use on salads and in pestos, for example—experiment with something fancier. For cooking and everyday use, look for something in the $9 to $15 range. Choose an olive oil that’s priced according to how you’ll use it. Treat it in any way? Should I dry the rosemary first? Cover with Olive oil. I also freeze in small portions so it gets used quickly, and I always cover any leftover with olive oil. Pick the leaves off your basil plants immediately after harvesting them. Blend on slow first and then on a fast setting until all the basil … My recipe has lemon juice which keeps the pesto from darkening too quickly. Answer Save. Favorite Answer. Basil Olive Oil. Any advice would be appreciated. Are there any ways to prolong the shelf life? 0. From the time it’s bottled, olive oil has a shelf life of 18 to 24 months. Discussions. I love COR’s Arbequina, which is fruity and costs $20. Is it going to grow something funky even submerged in the oil? How long should it keep? The forums are retiring in 2021 and are now closed for new topics and comments. 1 decade ago. How long would it likely keep on a shelf? Would it be better to tightly cork the bottle (it has one of those dispenser spouts now, like a liquor bottle)? Relevance. Thanks in advance!