BJ Roasters

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Coffee Ceramic

April 19th, 2007

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Can you tell me anything about the dark rings inside of ceramic coffee mugs?

When I take my coffee cups from the dishwasher they have dark circles inside. What is that? Is it toxic? Has the coating worn off by the coffee? Should I throw the mugs away or are they safe to drink from?
The mugs are clean, no coffee stains. If the porousness question were true, wouldn't it be equally distributed? The rings are black/gray not brown like coffee. I think there's something else going on. And I'm not looking to change my coffee drinking habits. I suspect the lines I'm talking about would be present in the cups of tea drinkers as well.

Those dark rings in your coffee cups exactly match the ones on the lining of your stomach. Presuming you drink the same coffee.

Coffee Candy Chews Bag 13.2 Ounces (376 Grams)

$9.95

Between cups of brewed gourmet coffee, you can enjoy the essence of our premium beans with our coffee candy chews. While the majority of coffee candies are artificially flavored, we use only the

Dark Chocolate Covered Coffee Beans Bag 6 Ounces (170 Grams)

$9.95

Both coffee and cacao beans have a long history in Costa Rica. Hundreds of years ago cacao beans were first used as currency by indigenous tribes. Before the introduction of coffee in the early 1700s,

Dark Chocolate Covered Coffee Beans Canister 7 Ounces (200 Grams)

$9.95

Both coffee and cacao beans have a long history in Costa Rica. Hundreds of years ago cacao beans were first used as currency by indigenous tribes. Before the introduction of coffee in the early 1700s,

French Coffee Press 3 Cup French Press Chrome

$16.99

Like many of the best inventions, the French Coffee Press seems to have resulted from an accident. Legend has it that around the mid 1800s, the serendipitous incident happened on a hillside when

	Mr. Coffee MWBLK Mug Warmer List Price: $9.99 Sale Price: $7.47 Used From: $7.35
	Trust Mr. Coffee to create this unique product. It's like a special dock for your mug. Place you mug on this electric base and it'll keep any beverage warm. From coffees, teas, chocolates, and toddies, use this mug warmer to help keep beverages warm - as you like it...

	Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue List Price: $27.99 Sale Price: $18.95 Used From: $15.99
	16 OZ, Leak Proof Travel Tumbler, Patented Thermos Vacuum Insulation Technology For Maximum Temperature Retention, Hot Or Cold, Unbreakable Stainless Steel Interior & Exterior, Cool To The Touch With Hot Liquids, Sweat Proof With Cold, Fits Most Automobile Cup Holders.

	Medelco 12-Cup Glass Stovetop Whistling Kettle List Price: $14.99 Sale Price: $6.49
	The Stovetop Whistling Tea Kettle can withstand high variations in temperature and is dishwasher safe%2E This whistling tea kettle has a 12 cup capacity with a heat resistant phenolic handle%2E Can be used on gas or electric stove tops%2E %28Includes whistling lid and metal trivet%29%2E

	Kings of Leon Ceramic Coffee Mug Sale Price: $5.56
	Kings of Leon Officially Licensed Ceramic Coffee Mug

	Pink Floyd The Wall "Crossed Hammer" Logo Ceramic Coffee Mug Sale Price: $12.58
	Pink Floyd The Wall "Crossed Hammer" logo ceramic coffee mug in gift box.

	The Who Ceramic Coffee Mug Sale Price: $4.99
	The Who officially licensed ceramic coffee mug featuring the iconic of Pete Townsend crouching in "British Flag Silhouette". Comes in "Target" gift box

	Dap 00688 Household Waterproof Adhesive Sealant, 100% Silicone, 2.8-Ounce Tube List Price: $6.49 Sale Price: $3.25
	Dap 00688 2.8 fl oz; clear [PRICE is per TUBE]

	Makita HG1100 1,100 Degree Heat Gun List Price: $136.00 Sale Price: $84.99 Used From: $74.86
	The Makita Heat Gun (model HG1100) is engineered to strip paint and varnish, thaw frozen metal pipes, loosen tile and putty, re-melt adhesives and more. The HG1100 has a compact size with less weight for comfortable handling...