The magic number depends on your squash’s thickness. For cubes, aim for 2 to 3 minutes in boiling water. For slices, go a tiny bit shorter—about 1.5 to 2 minutes.
But wait! There’s a quirky truth: summer squash (like zucchini) is delicate. Winter squash (like butternut) is a tank. Summer squash blanches fast because it’s mostly water. Winter squash needs a few extra seconds to stop those nasty enzymes.
You know those enzymes? They’re the villains of frozen food. They cause color loss, weird flavors, and a texture that screams “I regret everything.” Blanching smacks them into submission.
The Ice Bath Ritual (Don’t Skip It!)
After boiling, you must shock the squash immediately. A bowl of ice water works like a cold slap to the face. This stops the cooking instantly.
If you skip the ice bath, your squash keeps cooking from residual heat. It becomes soggy. It loses its vibrant color. It basically becomes the vegetable equivalent of a deflated balloon.
Here’s a fun fact: the exact timing matters because squash has a sneaky high water content. Over-blanch it, and it turns into a sponge that freezes into a block of ice crystals. Under-blanch it, and those enzymes party in your freezer.
