Customers call us and tell us that their Hula Daddy Kona Coffee doesn’t taste as good at home as it did on our plantation. While we like to think we have a special ambiance that we brew into our coffee, it isn’t really true. The difference is not the geography, it is the water. Ninety-eight percent of a cup of coffee is the water. Less than 0.4% of brewed coffee provides the flavor of the coffee. Put the right water into your brewer and the flavor will come through. Put the wrong water into your brewer and you will have hot, brown water with caffeine in it.
All drinking water has some minerals and chemicals. Some of those compounds are positive and add to the refreshing taste. However, there are as many as 315 different mineral and chemical compounds distributed by city water companies, not all of them good for coffee brewing.
Perfect Coffee Brewing Water
The Speciality Coffee Association of America recommends brewing coffee in water that contains 150 parts/million of total dissolved solids, 5 grains hardness and a ph close to 7. The water should be free of calcium, magnesium. chlorine, iron, organic contaminates and foreign odours and flavors.
Sounds great but how do you know? Unless you want to spend a lot of money on a laboratory water analysis, you have to go to the source. You know that your tap water doesn’t meet these requirements because, at the very least, it has chlorine in it. Chlorine destroys the good flavors in coffee. Quality bottled water should be close to these requirements. You can call the bottled water company and ask for a free copy of their water quality report. If you use a water filter, you can check the manufacturer’s website to see what effect the filter will have on your tap water.
Cup Your Water
The simplest and maybe the best thing to do is to cup your water just like you cup your coffee. How does the water look? Is it clear, or is it cloudy? Does it settle and become clearer? How does it smell? How does it taste – hot vs. cold?
Use a Water Filter
If you use a water filter make sure that it is giving you the water quality you need. Many restaurants make coffee made from tap water run though cheap in-line filters. How many really good cups of coffee have you ever had at a restaurant? Some of the different types of filters are:
Activated Carbon Filters
Water is forced through positively charged carbon. Carbon filters are common in counter top, faucet and under the sink units. They remove bad tastes, odors and chlorine. The higher quality filters also remove heavy metals, germs and some organic chemicals.
Cation Exchange Water Softeners
In a cation water softener water is forced through a chemical bath that trades minerals with a strong positive charge for minerals with a lesser charge. Water softeners are whole house or point of entry systems. Water softeners remove calcium, magnesium and barium. Through ion exchange, this process replaces the minerals in the water with sodium. However, sodium when combined with the bicarbonates already in the water, causes the coffee grounds to swell and extends the extraction time which results in over extraction. If too much oil is released, especially bitter oils, it can result in a bitter coffee and often an “oil slick” on the surface of the coffee that binds the coffee particles together. We do not recommend making coffee with water from a water softener system
Distiller/Boiler
Home distillers boil water and then re-condense the steam. They eliminate bacteria, organic solids, cadmium, chromium, copper, lead and mercury, arsenic, barium, fluoride, selenium and sodium. However, distilled water is flat and doesn’t have a refreshing taste as it lacks the good minerals that bring out the natural flavors of the coffee. We do not recommend distilled water for brewing coffee.
Reverse Osmosis
In an RO filter water is forced though a semipermeable membrane which allows the water molecules to pass but keeps out larger molecules. Reverse osmosis filters eliminate most contaminants, including germs, cadmium, copper, lead, mercury, arsenic, barium, nitrate/nitrite, perchlorate and selenium. However, water coming directly from a reverse osmosis filter tastes flat. Most bottled water companies use reverse osmosis to manufacture “spring water.” However, bottled water companies add oxygen and good tasting minerals after the water has been filtered. You can’t do that with a home reverse osmosis system. We do not recommend making coffee with water from a home reverse osmosis system.
Maintain Your Filter
effective, but actually can make your water worse, by starting to release harmful bacteria or chemicals back into your filtered water.
What Water Source Should You Use to Brew Hula Daddy Kona Coffee?
quality bottled water.
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All Kona coffees are not alike. Saying that all Kona coffees are the same is like saying all wine from Napa is the same. Napa red wines sell from the winery from $4 a bottle to $900 a bottle. There are bad, average, good, and extraordinary wines in Napa. The same holds true for Kona coffee. 
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