How to Blanch and Freeze Vegetables from Your Garden
July hit and suddenly I had more green beans than I knew what to do with. Like, embarrassing amounts. Two plants I stuck in as an afterthought, and now there’s a colander full every other morning and my family is starting to give me a look.
If you’re in the same boat right now, the best move is to blanch and freeze vegetables before they get away from you. It’s not complicated, it doesn’t take any special equipment, and it’s the cheapest way to stretch a summer harvest into November. I’ll walk you through the whole thing.
Why Bother Blanching at All
I skipped the blanching step my first year. Just threw raw beans in a freezer bag and figured I was a genius. Six months later they were mushy, gray, and tasted like the inside of a freezer. Turns out there are enzymes in vegetables that keep breaking things down even at freezing temps. A quick dip in boiling water stops that process cold. (Pun intended. Sorry.)
The good news is blanching takes maybe ten minutes start to finish. You need a big pot, a bowl of ice water, and a colander. That’s it. Whole equipment list right there.
The Basic Process (Works for Most Vegetables)
Get a big pot of water boiling hard. Meanwhile, fill a large bowl with cold water and dump in a tray of ice cubes. This is your ice bath and it matters, so don’t skip it.
Drop your vegetables in the boiling water. You’re not cooking them, just blanching them, so the times are short:
- Green beans: 3 minutes
- Peas (shelled): 1.5 to 2 minutes
- Broccoli florets: 3 minutes
- Leafy greens (kale, chard, spinach): 2 minutes
Pull them out with a slotted spoon or dump them into a colander, then get them into the ice bath immediately. You want them to stop cooking fast. Let them sit in the ice water for the same amount of time you blanched them. Then drain and pat dry. Moisture is the enemy of a good freeze.
The Tray Step (Don’t Skip This Either)
Here’s where most people accidentally create one giant vegetable brick. Dump wet blanched beans straight into a bag and freeze them, and they will fuse into a solid mass you have to chip apart like you’re mining. Ask me how I know.
Spread your dried vegetables in a single layer on a baking sheet and stick the whole thing in the freezer for an hour or two. This is called flash freezing and it means every piece freezes individually. Then you can pour them into a bag and grab a handful at a time without any drama.
No special trays needed. A regular rimmed baking sheet works perfectly.
Bags and Storage
Reusable freezer bags are worth the small investment if you’re doing this regularly. Otherwise regular zip-top bags work fine. The key is getting as much air out as possible before sealing. I don’t own a vacuum sealer. I just seal the bag most of the way, stick a straw in the corner, suck the air out, and seal it fast. Works well enough.
Label everything with what it is and the date. I have skipped this step. I have regretted skipping this step. Frozen peas and frozen edamame look identical in a dark freezer at 7am.
Most blanched vegetables will keep well for 10 to 12 months. Which means the beans I’m freezing right now will see me through to next July’s garden glut. It’s a beautiful cycle, really.
What Doesn’t Freeze Well (and What to Do Instead)
Not everything wants to be frozen, and it’s worth knowing before you blanch and freeze vegetables you’ll regret.
Cucumbers are basically just water. Freezing turns them to mush. If you have too many cucumbers, make refrigerator pickles. Takes about 20 minutes, no canning equipment needed.
Lettuce and salad greens are a lost cause in the freezer. They go immediately translucent and sad. Eat them now, or if they’re bolting, let one plant go to seed and collect it for next year.
Zucchini is a complicated case. You can freeze it but the texture changes, so it’s only good cooked after that, not raw. Shred it first, squeeze out the water, and freeze in 1-cup portions. Perfect for adding to muffins and bread all winter. (If your zucchini situation has fully spiraled, I wrote a whole post about what to do when zucchini gets out of control.)
Tomatoes change texture when frozen but they’re great for cooking. Just core them and freeze whole. The skins slip right off when you run them under warm water later.
Potatoes turn grainy and weird. Don’t freeze raw potatoes. Cook them first if you want to freeze them.
The Math on This
A bag of frozen green beans at the grocery store runs what, a couple bucks? The beans I’m freezing right now cost me seeds, water, and a few minutes of morning picking. Over a full season with a decent harvest, you can easily stock a freezer with vegetables that would cost real money to buy frozen. Which, if you think about it, is the whole point of growing your own in July.
If you’re still figuring out what’s worth growing for a summer surplus in the first place, I covered a lot of that in my post on what to grow in your garden in July. Green beans, peas, and broccoli are all on that list for a reason.
Anyway. Go check your bean plants. I’ll wait.
Photo by Philippe Zuber on Unsplash
