The best preservation methods edible flowers respond to are drying, freezing, and candying. You can also try infusing them. Pick the right method based on how you plan to use your blooms later.
I tested all four methods last summer with calendula, roses, and lavender from my garden. Drying worked best for teas and baking. Freezing kept colors bright for garnishes. My candied violets lasted three months and looked stunning on birthday cakes all winter long.
Drying edible flowers pulls moisture out so mold and bacteria cannot grow on your petals. You can air dry small batches by hanging them upside down in a dark room. This method takes one to two weeks but costs nothing and works great for sturdy flowers like lavender.
A dehydrator speeds up the drying process and gives you more control over results. Set your machine to 95°F (35°C) for delicate petals that might brown at higher heat. Check your flowers every few hours until they feel crisp and crumble when you pinch them.
Freezing keeps your flowers fresh for cooking and drink garnishes through the cold months. Fill ice cube trays halfway with water and drop one bloom in each slot. Freeze solid, then add more water on top to lock the flower in the middle. Pop out your flower cubes when you need them.
Research shows that freezing at -0.4°F (-18°C) keeps harmful germs from growing on your flowers. This temperature stops or reduces the microbial load on your petals. Your frozen flowers stay safe to eat for months when you store them at this cold level.
Candying coats your flowers in sugar for cake and cookie decorations that sparkle. Brush petals with beaten egg white and dust with superfine sugar on all sides. Let them dry on a rack for 24 to 48 hours until they feel stiff. Store in an airtight tin with wax paper between layers.
Infusing puts flower flavor into oils, vinegars, honeys, and spirits for cooking use. Pack clean petals into a jar and cover with your liquid of choice. Let the mixture sit for two to four weeks in a cool dark spot. Strain out the petals and enjoy your creation for up to a year.
Storing edible flowers long-term requires the right method matched to the right bloom type. Lavender and chamomile dry well and keep for six months in sealed jars away from light. Rose petals freeze better than they dry because their color fades less in the cold.
Here is a quick guide for how long each method keeps your flowers safe to use. Dried blooms last up to six months in airtight jars. Frozen flowers stay good for three months in your freezer. Candied petals keep for three months in a cool dry spot. Infusions hold their flavor for up to one year.
I make a batch of each type at the end of summer when my garden peaks with blooms. Dried calendula goes into winter teas. Frozen borage floats in cocktails. Candied violets top holiday cakes. A few hours of work in August keeps flowers in my kitchen all year.
My second summer of flower drying taught me that thin petals need more watching than thick ones. I burned a whole batch of rose petals by leaving them too long at high heat. Now I check every two hours and take notes on how each type behaves so I get it right.
Start with drying if you have never preserved flowers before since this method forgives mistakes. Pick your blooms in the morning after dew dries but before the sun gets too hot. Work in small batches until you learn what each flower needs to turn out perfect.
Read the full article: 20 Edible Flower Varieties for Gourmet Gardens
