Nothing can be more disappointing than when you find out that the delicious leftover lasagna you made during Thanksgiving has already spoiled, when you already had plans for it. It is so heartbreaking.
There are a lot of storage hacks people put out there, from using ziploc to store veggies to plastic wrap for chicken, which, by the way, is great, but one of the most effective ways is to follow the food jar storage principle, which involves clever food storage hacks that can transform your fridge from a compact of unpreserved leftovers to a more organized place for fresh and flavorful meals.
Benefits of Using Glass Jars for Leftover Storage
Though plastic containers are more common in households, glass jars are a more sustainable, eco-friendly option in the kitchen because plastic containers can easily absorb the smell of food and are porous, whereas glass jars do not absorb smells from last night’s curry or stains from tomato sauce.
Using airtight food storage glass jars also ensures that your food stays fresher for a longer period, and because glass is BPA-free and chemical-free, you can store your leftovers safely, knowing no toxins are leaching into your food during refrigeration.
How Long Can You Store Leftovers in Glass Jars?
Aside from learning glass jar storage hacks, it’s also important to know how long your leftovers are actually safe to eat while storing them. Even though glass containers preserve food content better than plastic, it has its limits.
Here's a general guide for storing common leftovers in glass jars:
| Type of Leftover | Fridge (Using Airtight Glass Jar) | Freezer (Using Freezer-Safe Glass Jar) |
| Cooked meat (chicken, beef, lamb) | 3-4 days | Up to 3 months |
| Soups and stews | 3-4 days | 2–3 months |
| Cooked pasta and rice | 3-4 days | Up to 2 months |
| Cooked vegetables | 3-4 days | 2–3 months |
| Homemade sauces and gravies | 2-3 days | Up to 3 months |
| Dips, salsas, and dressings | 5-7 days | Not recommended |
| Dairy-based leftovers (yogurt, cream sauces) | 2-3 days | Not recommended |
Pro tip: Consider adding labels to your jars with the storage date.
What Food Jar Storage Hacks can be applied to Leftovers?
First of all, it is important to note that not all glass jars are the same; hence, not all foods can be stored in the same storage jar. For instance, square jars are best for foods like rice, beans, and pasta, whereas small glass jars are best suited for jams, salad creams, etc.
Knowing this is the foundation for applying these storage hacks to leftovers in your kitchen. This takes us to three key fundamental food storage hacks:
● Measure and control each portion
Understanding how to use storage jars to your advantage is the game-changer you need to eliminate food spoilage. One way you can effectively execute portion control is by dividing leftovers into individual portions. For example, you can use bulk jars to portion out your yoghurt parfaits to serve in portions for breakfast. This prevents food waste and enhances the freshness of each meal.
● Label each jar
As stated earlier, understanding the right food jar storage hacks stems from knowing the appropriate glass jar to use to store foods. Start by separating and sorting huge portions of meals prepared in bulk jars, then use a label maker or write directly on the jar to label what each jar contains. You can even go further by including the date and key reheating instructions. This simple step will save you from food spoilage and allow you to enjoy your leftovers.
● Organise each meal according to specifications
Who says storing leftovers can’t be fun? With a little mix of creativity and inspiration, you can organise each meal with specifications in storage jars. For instance, while some foods require being stored in the fridge, others are best stored in a clean and dry environment. Dry goods like grains, nuts, and wheat work best in a dry environment, while veggies, soups, and yoghurts are best preserved in the fridge. The benefits of these food jar storage hacks can only be enjoyed by knowing where best to keep your leftovers, labelling them, and organising them according to specifications.
What is The Right Glass Jar for Every Leftover?
To reduce food wastage, it’s important to also use the right jar for each leftover. Here are some recommendations:
● Small glass jars are best for individual portions of condiments, salad dressings, jam, sauces, or dips.
● Half-pint and 500ml glass jars can be used for soups, stews, pasta, rice, couscous, or any meal you've prepped in bulk and want to portion into single servings.
● Large glass jars (750ml-1 litre) are best reserved for larger quantities such as a full pot of curry, overnight oats for the week, or a large grain salad. These are also great for storing dry goods like pasta.
● Square jars are great for saving space in your fridge and pantry shelf because they stack side-by-side perfectly, increasing the amount of space you have to store items in your fridge.
● Squat jars work well for thicker leftovers such as salsa, sour cream, mashed potato, and any condiment you'll be scooping rather than pouring.
How to Set Up a Leftover Storage System with Glass Jars (Step-by-Step)
A leftover storage system is not some rocket science. In fact it’s as simple as “ABC…” It just takes a set of glass jars and a few consistent habits:
Step 1: Declutter First
Before anything, empty your fridge and pantry shelves. Discard anything expired or damaged, and group what remains by food category because you can't build an organised storage on top of a messy one.
Step 2: Choose the Sizes of Your Jars
Decide which sizes you need most based on your household. A single person or couple will get the most use from 250ml and 500ml jars. Families will want a mix of 500ml and 750ml jars for bulk portions, plus smaller jars for individual servings and condiments.
Step 3: Assign Shelves/Sections
Treat your fridge and pantry like a map by designating one shelf or section for cooked leftovers, another for fresh produce, and a separate area for dry goods. This helps you know where to look for anything and where to put things back.
Step 4: Label Every Jar
Write the contents and the date on each jar before it goes in the fridge. A simple label maker, masking tape, or a chalk marker on a reusable tag all work well.
Step 5: Use the FIFO Method
FIFO is simply First In, First Out, which means newer jars go to the back, older ones come to the front. This reduces the amount of forgotten leftovers at the back of the fridge.
Step 6: Cool the Food Before Sealing
Avoid placing hot food directly into a sealed glass jar in the fridge. Allow leftovers to cool to room temperature first (within two hours of cooking), then seal and refrigerate. This prevents condensation inside the jar, which increases the rate of food spoiling.
Why Leftover Storage and Food Waste Matters in the UK
According to WRAP (Waste & Resources Action Programme), UK households throw away approximately 6.4 million tonnes of food every year. A major portion of that is cooked food which can be attributed to improper storage, and food waste is one of the most avoidable household costs in the UK.
Glass jar storage is one of the most effective ways to reduce that waste at home because glass jar:
● Is transparent, you can easily see what you have without opening anything.
● Comes with airtight lids that keep food fresh longer.
● It's reusable and easy to clean, etc.
Beyond the environmental case, there's a financial implication: The average UK household wastes around £700 worth of food annually. Hence storing leftovers well with the right jars, the right labels, and a consistent system, offers one of the simplest ways to close that gap.
Conclusion
The sight of leftovers can sometimes be a burden, but with the right food jar storage hack, those storage containers can aid mindful eating and reduce the rate of food waste in your kitchen. This will help you not only save money but also relish the joy of delicious leftovers.
With the right storage tips, you can preserve your meals and enjoy them for as long as you want to.
Frequently Asked Questions
● How can I organise my pantry with square jars?
First of all, have an idea or outline plan as to how you want your pantry to look. Sort and declutter food items that are expired or damaged, and then begin to categorise and label each item in square jars. This will make your pantry space more accessible and well-organised.
● Can you store leftovers in squat jars?
Yes, you can, and because squat jars are structured in a way that is unique from other types of jars, there are different types of leftovers that can be stored in them, such as vegetables, salsa, sour cream, etc.
● What can you keep in bulk jars?
You can keep both dry and semi-liquid food in bulk jars from wheat, grains, jams, oats, sauces, etc., and their airtight twist lid will keep your food fresh and safe for a long time.