New 30-cup urn has black-gold-blue stain after one use for tea water only; assuming hard water. Is the interior of the urn aluminum or stainless steel? Will vinegar solution remove the stain? Any suggestions to prevent having this reoccur with every use? Is aluminum or stainless steel interior best for hard water area?

Repeated coffee drinking in fine bone china can cause staining that doesn't come out with the regular gentle washing. To get these stains out you need to mix baking soda with some water until you create a paste. Spread the paste onto the cups until the stains have disappeared. Then rinse them out with soap and water.

Iced tea is made using citrus fruits such as citrus fruits, limes, lemons and even the berries. This recipe I've made use of charcoal powder. You can also make use of tea leaves. Green tea is also a good option to make the ice tea. Because tea is rich in antioxidants, it's a good idea to incorporate tea into your diet.

I've made use of organic, unrefined cane sugar to sweeten the tea. You can also add jaggery (though the flavor will differ) and any other sugar of your preference.
How to make iced Tea recipeSteeping tea
1. In a pan pour 1.25 litres water.
2. Place the pan over an open flame. Let the water get to a boiling point.
3. After the water has come to an end of boiling, turn off the burner and pour in 2 cups of black tea powder. To give a subtle tea taste one can add 1 tablespoon of tea powder. In lieu of powdered tea, you could make use of green or black tea leaves.
4. You can add 1/3-1/2 cup of sugar. For a taste that is less sweet you can add 1/4 cup of sugar.
5. Mix well, and let the tea leaves infuse within the water for 4 five minutes. If you want a milder tea flavor, steep for between 2 and 3 minutes.
6. After the tea has been steeped in the hot water add 3 tablespoons of lemon juice. To give it a more lemony flavor it is possible to include 4 tablespoons lemon juice as well. It is also possible to skip the lemon juice completely and just make simple cold tea.
7. Stir using the spoon
8. Then strain the tea into the glass or stainless steel jar. The glass jar must be able to withstand the temperature.
9. Allow the tea to cool to the room temperature. You can then chill it in the refrigerator.
10. As you serve Add four to five glasses of ice cubes. You can add more or less according to your taste. Additionally, you can add between 1 and 2 slices of lemon. The addition of lemon slices is not required.
11. Pour the tea into the glass.
12. Garnish with slices of lemon or a small sprig of mint leaves.
Serve tea with ice immediately. While drinking , stir the tea with an ice cube or stirrer.

https://www.kesargrocery.com/tea-and-coffee/

20 cups of coffee needs 2 cups of coffee grounds
30 cups of coffee needs 2 1/2 cups if grounds
40 cups of coffee needs 3 cups of grounds
45 cups of coffee needs 3 1/2 cups of grounds

1 cup brewed coffee = 5 fluid ounces
* use standard measuring cups

If you can find this product: (Or order it online)

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An awesome product that you spray on and let sit overnight. then simply wash it off. (Non Toxic / Non corrosive) No gloves required but does have an odd odor so I would let it soak outside. Heavy accumulations may require a second treatment.

Also great on shower heads. Remove it.. place it in a glass overnight and then re-install the next moring. Does not discolor anything. Ditto for shower enclosures and tile. Why this product is not in great demand is a mystery.

Link with picture: http://milo.com/32-oz-eliminate-shower-tub-and-tile-cleaner (out of stock!)

THIS WILL Clean it.

Kelly

Hi,
I use 1 measuring cup of coffee for each 8 cups of water... this makes a good strong brew...

heatman101

Did you try Melitta website?

You can use of about 7 to 9 gr per cup of 150 cc

Try dropping a couple of babies feeding bottle steralising tablets in there with a fairly hot water

Leave it for an hour or so

Should remove any staining

You say your new oven...and DW have stains...I will assume (if that's OK) that you have a stainless steel oven...and are washing stainless steel in the DW...but you are having streaks and or white...spots or deposits...Sounds like hard water...you may try a localized..(just for the DW and kitchen sink area) filtration system...to reduce hardness of water...(is this well water)..if so you definitely need filtration...if you don't already have it.
Here are some issues and or cleaning techniques for stainless steel.

stainless steel is known for its ability to be a clean surface that resists corrosion and rust. Dirt, dust and grime, however, put stainless steel at risk for corrosion and rust. Luckily, stainless steel responds well to cleaning, never wearing out from excessive cleaning, as long as certain rules are followed. 1. Water and a cloth.
Routine cleaning can be accomplished by using warm water and a cloth. This is the least risky option For cleaning stainless steel. Dry with a towel or cloth to prevent water spots. Wipe in the directions of the polish lines.
2. Mild detergent, (dish washing liquid) and cloth.
For cleaning that needs more power, mild detergent and warm water can do a great job without damaging the stainless steel. Make sure you rinse the surface thoroughly to prevent staining and spotting. Towel dry to prevent water spots which can be caused by minerals in water.
3. Glass cleaner for fingerprints.
Fingerprints are one of the biggest complaints about stainless steel, but can be taken care by using glass cleaner or household ammonia. Rinse thoroughly and towel dry. There are some newer types of finishes for stainless steel that resist fingerprints, a must if your pint-sized helpers leave their mark on your stainless steel appliances.
4. stainless steel Cleaner.
If you’ve had staining or scratching, or need to polish your stainless steel, a stainless steel cleaner may be a good option. Some of these cleaners and polishes can help minimize scratching and remove stains. They also can polish stainless steel surfaces nicely. Read the directions on the stainless steel cleaner and test in an inconspicuous spot. Be sure to rinse thoroughly and towel dry.

If this does not help please clarify...with specific model #'s and walk me through (step by step) what the specific problem is and how you address it....Thank you and I hope this helps.............
Good Luck...........The Fang.