Are Ice Crack Cups Safe?

3 Truths to Ease All Your Worries

When you first see an ice crack cup, many questions may pop into your mind: "With so many fine cracks, will they trap dirt? If I pour hot water in, will harmful substances seep out?" As a store specializing in Chinese ceramic cups and bowls, we get similar questions every day — today, we’ll use 3 solid truths to fully explain the safety of ice crack utensils, so you can enjoy this "beauty of fragmentation" with peace of mind.

Truth 1: Ice cracks are "artistic glaze cracks", not "safety loopholes"

Many people worry that "cracks will leak" or "seep toxins", but the core issue is not understanding how ice cracks form:

Ice cracks are lines formed by the natural contraction of the ceramic glaze layer during high-temperature firing, just like the cracks in a frozen lake in winter — they only stay on the surface "glaze layer" and never penetrate the underlying "body" of the ceramic. This means:

Tea will not seep into the interior of the cup, nor will it react chemically with the ceramic body;

Our ice crack cups are fired at temperatures above 1300℃ (200-300℃ higher than ordinary ceramic cups). The glaze is made from natural minerals (kaolin, quartz, feldspar, etc.), which form a stable "vitreous structure" under high temperatures, free of harmful substances like lead and cadmium;

Even if you look through a magnifying glass, you’ll see that the cracks are "surface-level lines" — the inner wall of the cup remains smooth, just like ordinary ceramic cups, with no risk of "harmful substance leaching".

In short: Ice cracks exist for beauty, not for "leaking", and they will never become "safety hazards".

Truth 2: Worried about dirt buildup? 3 cleaning steps make it easier to maintain than ordinary cups

"Will tea stains accumulate in the cracks? What if I can’t clean them?" This is the second most common concern, but in fact, with the right method, cleaning an ice crack cup is no harder than cleaning an ordinary cup — it may even be easier:

1. Daily cleaning: Rinse promptly + wipe with a soft brush

After drinking tea each time, rinse the cup with warm water immediately (don’t let tea stains dry), then gently brush the cracked areas with a soft brush (such as a dedicated cup brush or old toothbrush). It takes just 20 seconds, and there’s no chance for tea stains to stick;

2.Deep cleaning: Natural ingredients work for stain removal

If you occasionally forget to clean and light tea stains form in the cracks, don’t panic — pour half a cup of warm water, add a spoonful of baking soda (or half a cup of white vinegar), soak for 10 minutes, then brush with a soft brush. The stains will come off easily without damaging the glaze (avoid steel wool or scouring powder, as they scratch the glaze and make it easier for dirt to stick);

3.Key reminder: Avoid "strong alkaline cleaners"

Products like heavy-duty kitchen degreasers or industrial descaling agents may corrode the glaze — they’re not recommended for ordinary ceramic cups, let alone ice crack cups. Natural ingredients + a soft brush are the best cleaning combination. A long-time customer of our store shared: "I’ve used my ice crack cup for half a year. Cleaning it this way every day, the cracks are still as clean as new."

Truth 3: Choosing the right cup means 90% of safety is guaranteed

Of course, not all ice crack cups are safe — low-quality, cheap products may use inferior glaze or be fired at low temperatures, which do pose risks. Here are 3 simple ways to choose a safe ice crack cup:

1. Check "quality signs": Focus on material transparency

A reliable brands will clearly state the glaze and body materials (e.g., "natural mineral glaze" "high-purity ceramic body"). Our ice crack cups use carefully selected raw materials, with no hidden inferior components;

2.Feel the "texture": The glaze should be smooth without grit

A good ice crack cup, despite having cracks, has an overall smooth glaze with no rough, grainy feel (inferior cups have a dry, astringent glaze that easily traps dirt);

3.Inspect the "body": The base should be thick and flat

Cups with a thick body are heated more evenly during firing, so the glaze shrinks steadily, resulting in "neat cracks" with no "deep gaps" or "leaky seams". From glaze selection to firing, our ice crack cups are overseen by veteran craftsmen with 30 years of experience from Dehua, Fujian (China’s Porcelain Capital). Every cup undergoes a "water-filling test" before leaving the factory (filled with water and left to stand for 24 hours to check for leaks), ensuring safety before shipment.

Final thought: Don’t let "worries" make you miss a great utensil

Ice crack art is a ceramic treasure left to us by ancient craftsmen. Those fine lines hold the "dialogue between nature and fire" — making tea in such a cup and watching the tea flow through the cracks is a unique pleasure.

If you’ve hesitated before due to "safety concerns", you can now rest easy: As long as you choose reliable products and clean them properly, ice crack cups are not only safe but also can accompany you for years (they develop a beautiful patina over time, making the cracks even more charming).

Right now, our store has an "ice crack cup trial activity": After receiving the cup, you can fill it with hot water and leave it to stand to check for leaks; if you’re not satisfied, you can return it within 7 days for a full refund, and we’ll cover the round-trip shipping — we just want you to experience this "beauty of fragmentation" with zero risk.

If you have other questions, feel free to contact our customer service — we’re happy to help!

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