Walk past the frozen food section at your local grocery store and you’ll likely see pizzas, ice cream, and maybe a bag of peas or two. But for many American adults, the freezer aisle is an afterthought when it comes to healthy eating. You might assume fresh is always best, especially for leafy greens and superfoods. The truth is, frozen options can be just as nutritious, often more convenient, and usually easier on your budget. Once you learn how to navigate the freezer aisle with purpose, you’ll see it as a valuable stop on your weekly shopping trip.

The first thing to understand is that frozen greens are picked at peak ripeness and flash-frozen within hours. That quick freeze locks in vitamins and minerals, so a bag of frozen spinach or kale can actually retain more nutrients than the “fresh” bunch that has been sitting in a truck, on a shelf, and then in your fridge for days. Studies have shown that the vitamin C and antioxidant content in many frozen fruits and vegetables rivals or even surpasses their fresh counterparts. For busy adults who struggle to use a whole bunch of greens before they turn slimy, frozen makes practical sense. You can pull out exactly the amount you need and leave the rest in the freezer for another day.

So where do you start in the freezer section? Look for plain vegetables and fruits without added sauces, seasonings, or heavy syrups. That means bags of frozen spinach, chopped kale, collard greens, or a medley of leafy greens. Check the ingredient list and make sure the only item listed is the vegetable itself. Some products sneak in butter, cream, or sodium-heavy dressings, which can turn a healthy side dish into a diet trap. The same goes for fruit. Frozen berries, mango chunks, and pineapple pieces are fantastic for smoothies, but avoid ones with added sugar. For algae superfoods, you might find spirulina or chlorella in the freezer as frozen cubes or powder. These are great additions to smoothies and shots, and having them pre-frozen means they’ll keep their potency longer.

When you pick up a bag of frozen greens, give it a quick look. If you see large ice crystals clumped together or a frosty coating on the outside, that suggests the product thawed and refroze at some point, which hurts both texture and nutrition. Also, feel the bag. It should be solid, not partially squishy. And always grab items from the back of the freezer case, because those are typically the coldest and have been exposed to less temperature fluctuation when shoppers open the door.

Storage at home is simple, but there are a few rules. Your freezer should be at zero degrees Fahrenheit or below. Keep the greens in the back of the freezer, not in the door, where temperatures can rise every time you open it. Once you open a bag, press out as much air as possible before reclosing it, and use a clip or rubber band to keep it sealed. Frozen greens and superfoods are best used within three to six months for maximum taste and nutrition. Don’t refreeze items after they have fully thawed, and never leave them on the counter for hours. Instead, either put them straight into a hot pan or add them frozen to soups, stews, and smoothies. No need to thaw spinach for a scramble; just throw it in the pan still frozen, and the water will cook off.

Saving money is where the freezer aisle really shines. A bag of frozen spinach often costs the same as a small bunch of fresh spinach but gives you two or three times as many servings. It also eliminates waste because you aren’t throwing out that half-bag of wilting leaves at the end of the week. The same goes for superfoods like frozen blueberries or acai packs, which can be pricey fresh but are more affordable frozen. Look for store brands and sales, and stock up when you see a good deal. Because frozen goods keep for months, buying in bulk is an easy way to trim your grocery bill while always having healthy ingredients on hand.

Making this work in your daily life is easier than you think. Add a handful of frozen kale to your morning smoothie, and you won’t even taste it. Fold frozen spinach into scrambled eggs or pasta sauce. Stir frozen mixed greens into chili or curry during the last few minutes of cooking. You can even make a quick side dish by sautéing frozen greens with garlic and olive oil. For superfoods, drop a frozen spirulina cube into orange juice or blend frozen berries with Greek yogurt for a delicious dessert. The key is to treat the freezer aisle as a legitimate source of high-quality nutrition, not a place for convenience junk food.

Next time you’re at the grocery store, pause in front of the freezer cases. Skip the frozen dinners and take a look at the humble bags of green vegetables. You might be surprised at how easy, economical, and genuinely healthy they are. By embracing frozen greens and superfoods, you’re not just saving money and time. You’re giving yourself a reliable, no-waste way to improve your diet one meal at a time.