How to Defrost Food in an LG Microwave (Complete Guide)

Defrosting food in your LG microwave is one of those things that sounds simple until you end up with chicken that is cooked on the outside and still frozen in the middle. Getting it right comes down to understanding how your LG microwave’s defrost function actually works — and which settings to use for different types of food.

Here is everything you need to know to defrost food correctly in your LG microwave every single time.

How Defrosting Works in a Microwave

Before jumping into the steps, it helps to understand why defrosting in a microwave requires a different approach to standard cooking. When you defrost food, you want the ice crystals inside it to thaw gradually and evenly. However, microwaves heat unevenly — the outer layers of food absorb energy faster than the frozen centre.

As a result, if you simply run your microwave at full power to defrost food, the outside begins to cook while the inside remains frozen. This is why LG microwaves use a much lower power level — typically 30% — during defrost cycles, and why the process involves pausing and turning the food at regular intervals.

Method 1: Auto Defrost (Recommended for Most LG Models)

Most LG microwave models include an Auto Defrost function that does the calculation for you. You simply enter the weight of the food and the microwave sets the correct power level and time automatically. Furthermore, on many models it will pause mid-cycle and prompt you to turn the food over — which is essential for even defrosting.

Method 2: Manual Defrost (For Models Without Auto Defrost)

Not all LG microwave models include an Auto Defrost function. Additionally, some foods — particularly delicate items like fish or bread — defrost better with a manual approach that gives you more control over the process.

Quick Reference: Defrost Times by Food Type

Food Type	Power Level	Approx. Time per 500g	Turn Halfway?
Chicken breast or thighs	30%	7 to 9 minutes	✅ Yes
Minced beef or lamb	30%	6 to 8 minutes	✅ Yes — break apart as it thaws
Fish fillets	30%	4 to 6 minutes	✅ Yes — handle gently
Bread and rolls	30%	1 to 2 minutes	⚠️ Check every 30 seconds
Vegetables	50%	3 to 5 minutes	✅ Yes — stir halfway
Steak or thick cuts	30%	8 to 10 minutes	✅ Yes
Prawns and seafood	30%	3 to 5 minutes	✅ Yes — stir frequently

Common Defrosting Mistakes and How to Avoid Them

Defrosting at full power
This is the single most common mistake. Running the microwave at 100% power to defrost faster causes the outer layer of food to begin cooking while the inside remains frozen. Always use 30% power for meat, fish, and poultry — no exceptions.

Not removing packaging first
Styrofoam trays, plastic wrapping, and foil seals are not microwave safe and should always be removed before defrosting. If you have accidentally microwaved a non-safe plastic container and noticed a burning smell afterwards, read our guide on why your microwave smells like burning plastic for what to do next.

Skipping the turning step
Turning or rearranging food halfway through the defrost cycle is not optional — it is the only way to ensure even thawing. Skipping it consistently results in food that is partially cooked on one side and still frozen on the other.

Leaving defrosted food sitting in the microwave
Once the defrost cycle is complete, cook the food immediately. Leaving defrosted meat or poultry sitting at room temperature — even inside the microwave — creates conditions for bacterial growth. The food safety rule is simple: defrost then cook straight away.

Defrosting food that is still in a block
For minced meat, prawns, or vegetables that are frozen in a solid block, break them apart as they begin to thaw. Furthermore, separating pieces as they defrost dramatically speeds up the process and produces more even results throughout.

Food Safety Rules for Microwave Defrosting

Defrosting food in a microwave is safe when done correctly. However, there are a few food safety rules that apply regardless of the method you use:

• Cook immediately after defrosting — do not refreeze food that has been defrosted in a microwave unless it has been cooked first
• Do not defrost eggs in their shell — the pressure buildup inside causes them to explode
• Defrost on a raised rack where possible — this prevents the food from sitting in liquid as it thaws, which can cause uneven heating
• Check the thickest part — always check the thickest section of meat or poultry to confirm it is fully defrosted before cooking. If it is still icy in the centre, run another short defrost burst

The Bottom Line

Defrosting food in your LG microwave correctly comes down to two things — using the right power level and not rushing the process. The Auto Defrost function handles most of the thinking for you on most LG models. For everything else, 30% power in short 2 minute bursts with regular turning produces consistently good results across all food types.

The most important rule to remember is to cook defrosted food immediately — do not leave it sitting after the cycle completes. Follow that rule and the defrost results from your LG microwave will be reliable every time.

For more LG microwave how-to guides, browse our full library at lgmicrowaves.com.