Are Handmade Ceramics Dishwasher Safe? A Care Guide
If you've ever held a handmade mug over the dishwasher rack and hesitated - I see you. It's one of the most common questions I get about my pieces, and honestly, it's a fair one: are handmade ceramics dishwasher safe? The short answer is yes, at least when it comes to my work. But since you're here, let me give you the longer, more satisfying answer, plus a full care guide so your pieces stay looking beautiful for years to come.
The Short Answer: Can You Put Handmade Ceramics in the Dishwasher?
Yes - RYN ceramics are dishwasher safe. I know that might surprise some people, because there's a widespread assumption that handmade automatically means fragile or fussy. It doesn't have to. All of my pieces are also microwave safe, which I think matters just as much in a real, everyday kitchen.
That said, not all handmade ceramics are created equal. Whether a piece can handle the heat and moisture of a dishwasher cycle comes down to a few specific factors: the type of clay used, how hot it was fired, and the quality of the glaze. So while I can speak confidently about RYN work, if you've picked up handmade pottery from a craft fair or a studio sale somewhere else, it's worth knowing what to look for - and I'll walk you through that below.
What Makes Stoneware Different From Other Ceramics
Not all clay is the same, and this is where things get genuinely interesting (at least to me - ask my husband how many times I've talked about vitrification at dinner).
The ceramics world broadly divides into three categories: earthenware, stoneware, and porcelain. Earthenware is fired at lower temperatures - typically around cone 06 to cone 02, which is roughly 1800–2100°F - and it stays porous even after firing. That's why traditional terracotta pots absorb water. Beautiful, but not ideal for your morning coffee.
Porcelain is fired high and is famously dense and translucent, but it can also be brittle and unforgiving to work with.
Stoneware sits in a sweet spot. It's fired at higher temperatures - cone 6 through cone 10, which ranges from about 2230°F to 2350°F - and at those temperatures, the clay body vitrifies. That means the particles fuse together into something dense, non-porous, and genuinely tough. White stoneware specifically has a tight, smooth clay body that takes glaze beautifully and holds up to everyday use without babying.
All of my pieces are made from white stoneware, and that's not an accident. I chose it because it's durable enough for real life - for the person who actually uses their mugs every single day, runs them through the dishwasher, and doesn't want to think twice about it.
How RYN Fires Its Pieces and Why It Matters for Durability
Here's where I get to geek out a little. Everything I make is fired in a reduction kiln at cone 10, which puts us right at the top end of stoneware temperatures - around 2350°F. Reduction firing means the kiln is starved of oxygen at certain stages, which affects how the glaze interacts with the clay and creates those subtle, complex color shifts you might notice in the finish.
My signature "candy coated" glaze - that soft, pink-toned surface that I'm a little obsessed with - is a direct result of reduction firing. The chemistry of the glaze responds to the oxygen-depleted atmosphere in ways you simply can't replicate in an electric kiln. It's part of why I love this process, even when it means less predictability.
But here's why this matters for durability: firing to cone 10 in a reduction atmosphere produces an extremely dense, hard clay body. The glaze and clay mature together at that temperature, forming a surface that's fused, sealed, and built to last. There are no micro-gaps for water to seep into. No soft spots. This is what makes these pieces genuinely dishwasher safe, not just wishful thinking.
I work out of Mudflat Studio in Somerville, where I get to fire in a real reduction kiln - which is honestly one of my favorite things about having a studio practice separate from my home. Every small batch of pieces I make goes through that same process, slowly and intentionally.
Best Practices for Washing and Storing Your Handmade Mugs and Vases
Even though my pieces can handle the dishwasher, a few simple habits will help them look their best for longer.
In the dishwasher: - Place mugs and cups upright or at a slight angle so water drains properly - standing them upside down can cause pooling in the base recess - Skip the "heated dry" cycle when you can. The extreme heat cycling isn't harmful to well-fired stoneware, but over many years, repeated thermal stress is harder on anything. Air drying is gentler - Don't overcrowd. Pieces knocking against each other is how chips happen - not from the water or heat, but from contact
Handwashing (when you feel like it): Warm water, regular dish soap, done. No special soaps needed. I handwash my own mugs more often than not just because it takes thirty seconds and I'm already standing at the sink. But I also absolutely run them through the dishwasher on busy weeks without a second thought.
Storage: If you're stacking mugs, consider a small piece of felt or a folded cloth between them. The unglazed foot ring on the bottom of a mug is intentionally left raw - otherwise the glaze would stick to the kiln shelf -and that slightly rough surface can scratch a glazed surface below it over time.
For my bud vases, if you're not using them with water regularly, just give them a rinse now and then. They're fully sealed and won't absorb anything, but dust happens.
Signs Your Ceramics Need Extra Care
This section is less about RYN pieces specifically and more about what to watch for with any handmade ceramics you own.
Crazing is that fine network of hairline cracks in the glaze surface — it looks almost like a crackle finish. It happens when the glaze and clay body have mismatched thermal expansion rates. Crazed glaze isn't always a structural problem, but it does create tiny crevices where bacteria can live. If you notice crazing on a piece you use for food or drinks, handwashing is safer than assuming the dishwasher will clean deep enough.
A matte or chalky surface after dishwashing can signal that the glaze wasn't fired high enough to fully mature - essentially, a soft glaze that the detergent is slowly etching. If this is happening to a piece, switch to handwashing only.
Chips on the rim or foot ring should be monitored. A small chip on the foot ring is usually cosmetic. A chip on a rim that contacts your mouth is worth retiring the piece from daily use.
None of these issues apply to properly fired, high-temperature stoneware - but it's useful context if you've got a mixed collection of handmade pottery.
How to Make Your Handmade Pottery Last for Years
Honestly? Use it. The best thing you can do for handmade pottery is treat it like the functional, everyday object it was made to be. My mugs are designed to be your actual morning mug - the one you reach for without thinking, fill with coffee, wrap both hands around, and put in the dishwasher. The cake stand is meant to hold a real cake at a real birthday party. The bud vase is for the flowers you grabbed at the grocery store on a Tuesday.
Pieces that sit in a cabinet and get taken out twice a year tend to get knocked around, hastily washed, and stacked carelessly. Pieces that are woven into your daily routine get treated with unconscious care because you're used to them.
That said, a few longevity tips that cost nothing:
Don't put cold water in a very hot piece straight out of the microwave — let it cool for a minute first. Thermal shock is real, even in well-fired stoneware
If a piece does chip, a fine nail file can smooth a rough edge on the foot ring so it doesn't scratch surfaces
Keep pottery away from the edge of counters. Most breakage happens from drops, not from dishwashers
Made slowly and intentionally in limited quantities, these pieces are built to become part of your everyday routine — not to be preserved behind glass.
If you're ready to find your next favorite mug or a little something to brighten up your kitchen counter, come browse the shop. New small batches go fast, so if something catches your eye, trust that instinct.