Spinach is a leafy green vegetable that is highly nutritious and versatile in cooking. It is a great source of vitamins like A, C, K, minerals like magnesium, iron, and antioxidants. Fresh spinach has a short shelf life and often goes bad within a few days if not stored properly. Freezing is an excellent way to extend the shelf life and preserve the nutrients in fresh spinach. But can you freeze fresh spinach without cooking it first? Let’s find out.
Can You Freeze Raw Spinach?
Yes, it is absolutely possible to freeze raw spinach without cooking it first. In fact, this is the recommended method for freezing spinach to retain maximum nutrients. Blanching or cooking spinach before freezing will lead to some loss of water-soluble vitamins like vitamin C and minerals. Here are some benefits of freezing raw spinach:
- Freezing raw spinach retains most of its nutrients like vitamins, minerals and antioxidants.
- It maintains the vibrant green color better compared to cooked frozen spinach.
- Raw frozen spinach has a more fresh-like texture when thawed.
- No loss of nutrients from water discarded after cooking.
- Saves time and effort from having to cook before freezing.
As long as you follow the proper techniques for freezing raw spinach, you can store it for 8-12 months without any drop in nutrients or change in taste.
How to Freeze Fresh Spinach
Freezing spinach is easy, but there are some steps you need to follow to ensure it freezes well and retains nutrients. Here is a simple step-by-step guide:
- Wash and dry spinach thoroughly – Rinse the spinach under cool running water to remove any dirt or debris. Gently dry with paper towels or a salad spinner.
- Remove any thick stems – The tender young leaves and thinner stems can be frozen as is. But thick, fibrous stems don’t freeze well. So remove any large, thick stems before freezing.
- Chop or keep whole – You can freeze spinach leaves whole or give them a rough chop. Whole leaves are good for adding to soups or sautéing. Chopped spinach is better for mixing into dishes like lasagna.
- Blanch (optional) – Blanching or briefly cooking the spinach in boiling water for 30 seconds to 1 minute helps retain the bright green color. But it can lead to some nutrient loss.
- Spread out on tray and freeze – Spread the spinach out in a single layer on a baking sheet or tray. Freeze until solid, about 1-2 hours.
- Transfer to airtight bags or containers – Once frozen, transfer the spinach to ziplock freezer bags, plastic freezer containers or glass jars with tight lids. Remove excess air and seal.
- Label and freeze – Label the bags or containers with the type and date of freezing. Return to the freezer. Use within 8-12 months for best quality.
Choosing Fresh Spinach for Freezing
Picking out fresh, tender spinach is key to ending up with a tasty frozen product. Here are some tips for selecting spinach to freeze:
- Choose young, tender spinach leaves. Mature leaves are tougher and stringier.
- Look for vibrant deep green leaves without yellowing or bruising.
- Baby spinach is ideal since the leaves are small and tender.
- Avoid spinach past its prime or that looks slimy or smells unpleasant.
- Pick organic spinach when possible to avoid pesticide residues.
- Make sure the spinach is dry without moisture on the leaves.
Thawing and Using Frozen Spinach
One of the biggest benefits of freezing spinach is that you can enjoy its fresh taste and nutrients year-round. Here are some tips for thawing and cooking with your frozen spinach:
- Thaw spinach in the refrigerator overnight, rather than at room temperature or in the microwave. This prevents loss of texture and nutrients.
- Use thawed spinach within 1-2 days for best quality and to prevent spoilage.
- Add still-frozen spinach straight to cooked dishes like pasta, soups, rice. The heat will thaw it out.
- Sauté or stir-fry thawed spinach with garlic, oil and seasonings for a quick side dish.
- Substitute thawed spinach for fresh in lasagnas, frittatas, quiches and other baked dishes.
- Puree thawed spinach into smoothies, dips, salad dressings or pesto sauce.
Freezing Different Types of Spinach
While regular spinach is the most common, there are some other varieties like baby spinach you can also successfully freeze. Here is a look at how to freeze them:
- Wash the baby spinach thoroughly and dry well.
- Spread out in a single layer on a sheet and freeze until solid, about 2 hours.
- Transfer to airtight freezer bags or containers.
- Thaw overnight in the refrigerator before using.
- Remove any thick stems from the spinach leaves.
- Rinse, dry and optionally blanch for 30 seconds.
- Allow to cool completely, then freeze in a single layer on a tray.
- Transfer frozen leaves to bags or containers once solid.
- Wash spinach thoroughly, remove stems and chop roughly.
- Spread the chopped spinach on a tray and freeze in a single layer.
- Once frozen solid, pack into airtight freezer bags or containers.
- Cook fresh spinach either by sautéing or boiling until wilted.
- Drain excess liquid and transfer to a blender or food processor.
- Puree with seasonings until smooth.
- Allow to cool fully, then spoon into freezer bags or containers.
Storing Frozen Spinach
Proper storage is important for preserving the quality and nutrients in frozen spinach long-term. Follow these freezing and storage guidelines:
- Freeze spinach as soon as possible after purchasing or harvesting.
- Store frozen spinach at 0°F or below for best preservation.
- Avoid storing in the door of the freezer where temperature fluctuates.
- Keep frozen spinach well sealed in airtight packaging to prevent freezer burn.
- Label bags or containers with type and date for easy identification.
- Don’t refreeze thawed spinach; cook or eat within 1-2 days.
- Use frozen spinach within 8-12 months for optimum flavor and nutrient retention.
Benefits of Freezing Spinach
There are many good reasons to freeze fresh spinach instead of letting it go bad. Here are some of the key benefits:
- Convenience – Spinach can be frozen when in season and enjoyed year-round.
- Cost savings – Buying in bulk when on sale and freezing spinach saves money versus purchasing weekly.
- Reduced waste – Freezing extends shelf life so excess spinach doesn’t go bad as quickly.
- Preserves nutrients – Frozen spinach retains its nutritional value much better than fresh kept for over a week.
- Consistency – Having your own frozen spinach on hand provides a consistent supply for recipes.
- Versatility – Frozen spinach can be used in smoothies, soups, baked goods and more.
Tips for Freezing Spinach
Follow these simple tips for the best results when freezing fresh spinach:
- Pick young, tender spinach leaves for freezing.
- Wash thoroughly and dry spinach well before freezing.
- Spread leaves in a single layer on a tray or cookie sheet to freeze initially.
- Use airtight freezer bags or containers to prevent freezer burn.
- Label bags or containers with contents and freeze date.
- Squeeze out excess air before sealing bags or lids.
- Store frozen spinach at 0°F or below for optimal freshness.
- Use within 8-12 months for best quality and nutrient retention.
Potential Problems When Freezing Spinach
While freezing spinach is generally a simple process, there are some potential problems to watch out for:
- Excess moisture – Spinach leaves that are not dried properly before freezing can clump together in a solid block of icy leaves.
- Freezer burn – Improper packaging that allows air exposure can lead to dried out areas and change in texture.
- Thawing issues – Dense clumps of frozen spinach leaves are hard to break apart and can thaw unevenly.
- Off flavors – Storing frozen spinach for over 12 months can negatively impact taste.
- Nutrient loss – Blanching before freezing can diminish vitamin and mineral content in spinach.
As long as you follow proper freezing protocols, you can avoid most of these common problems with frozen spinach.
Frequently Asked Questions
How long does fresh spinach last in the fridge?
Fresh spinach will usually keep for 3-5 days when properly stored in the refrigerator in a plastic bag. Rinse the spinach right before use since moisture speeds up spoilage.
Can you freeze cooked spinach?
Yes, cooked spinach can be frozen but it is not ideal. Blanching or cooking spinach before freezing will lead to some loss of nutrients. For best nutrition and texture, it’s better to freeze spinach raw.
Is frozen spinach as healthy as fresh?
Frozen spinach is just as nutritious as fresh spinach in most cases. The freezing process does not destroy the beneficial vitamins, minerals and antioxidants. In fact, frozen spinach often has higher nutrient levels than fresh that has been sitting for over a week.
How do you thaw frozen spinach?
It is best to thaw frozen spinach overnight in the refrigerator. Microwaving or leaving spinach to thaw at room temperature can cause texture and nutrient changes. Thawed spinach should be used within 1-2 days.
Can you refreeze thawed spinach?
It is not recommended to refreeze thawed spinach. Thawed spinach should be cooked or eaten within 1-2 days. Refreezing previously frozen and thawed spinach increases the risk of bacterial growth.
|Estimated Shelf Life
|Plastic bag or container
|32-40°F / 0-4°C
|Frozen raw spinach
|Freezer bag or container
|0°F / -18°C or below
|32-40°F / 0-4°C
Freezing fresh spinach without cooking is a great way to preserve nutrients and have a handy storage of spinach whenever you need it. Make sure to thoroughly dry the leaves, spread in a single layer on a tray to freeze initially, and use airtight freezer bags or containers. Frozen properly, spinach retains its nutrients for 8-12 months. Thaw overnight in the fridge before using for smoothies, soups, sautés and any dish that calls for fresh spinach. With the proper freezing and thawing methods, frozen spinach can be just as nutritious and flavorful as fresh.