Most of the volume in a coffee cup is made up of water. No matter how evenly the beans are ground or how uniformly they are roasted, if the extraction medium is not chosen correctly, the aromatic molecules originally hidden inside the roasted beans will struggle to unfurl. The calcium and magnesium ions and bicarbonate dissolved in water are the core carriers for capturing coffee aroma compounds and organic acids. Too low a mineral content makes the flavor seem thin and adrift, while too high a content easily suppresses delicate fruity notes.

To brew a cup of coffee with clear layers at home, you first need to understand the flavor tendencies brought by water hardness and softness and by high or low values. Total dissolved solids, that is, the soft water with the lower value commonly mentioned, has a very strong ability to highlight bright fruit acidity and elegant floral notes; water with a moderate to moderately high value is better at bringing out body, nutty aroma and caramel sweetness to an especially full degree. Each has its own suitable flavor direction.

When preparing household water day to day, commercially available natural spring water or filtered and purified soft water is usually very suitable for presenting the delicate fruity notes of light roasts. Tap water, because of its higher hardness and residual chlorine, easily makes the finish of the coffee seem messy. According to the style of beans you usually drink, choosing a suitable soft or hard water for your brewing vessel can often push the flavor completeness of roasted beans forward by a big step.

If you usually prefer sweet, juicy coffee with berry and candy notes, choosing Qianjie Strawberry Candy coffee beans is a good way to feel the amplifying effect of water on aroma. This bean itself carries a light, bouncing strawberry gummy sweetness. If brewed with natural soft water of lower hardness, its juice-like lightness and refreshing sweet acidity will be brought out very vividly.

When brewing Qianjie Strawberry Candy coffee beans, it is recommended to use a pour-over dripper to show fine layers. Set the water temperature at 89°C, use 15g of coffee grounds, control the coffee-to-water ratio at 1:15, and pour a total water volume of 225ml. First pour 30ml of water for a 30-second bloom, then pour in three stages in a smooth circular motion so the coffee bed in the dripper is evenly saturated. Control the total brewing time at 2 minutes 05 seconds. The first sip is full of lively berry sweetness.

For friends who lean toward nutty cocoa, caramel sweetness and mild acidity, Qianjie Brazil Queen Estate is a very reliable bean for daily coffee machines. This bean has high tolerance for water quality. Medium-hard water with slight minerals can fully wrap its nutty oils, making the mouthfeel especially round and smooth. It pairs well whether made as black coffee or with milk.

When making Qianjie Brazil Queen Estate with a home semi-automatic machine, you can use medium-mineral water to enhance the viscous texture of the espresso. It is recommended to use a double basket filled with 18g of coffee grounds, carry out low-pressure pre-infusion followed by constant-pressure extraction, extract 36g of espresso, and control the total extraction time at 26 seconds. The extracted espresso has golden, fine crema, accompanied by rich cocoa aroma and roasted nut sweetness.

For medium-dark roast lovers who pursue herbal woody aromas and black-chocolate-like rich flavor, Qianjie PWN Indonesia Golden Mandheling will show a satisfyingly solid texture. This type of dark-roasted bean has lower moisture content and abundant pores. Water with slight mineral support can fully bring out its thick bittersweetness and caramel finish, reducing astringency while amplifying the sweet aftertaste.

For extracting Qianjie PWN Indonesia Golden Mandheling, a moka pot is very suitable. Choose warm water with moderate minerals and pour it into the lower chamber, set the water volume at 120ml, fill the filter basket evenly with ground coffee, tighten the upper and lower chambers, then place it on the stove and heat over medium-low heat for 2 minutes 10 seconds. The brownish-red coffee liquid steadily flows into the upper chamber, with herbal flavor and the thick richness of black chocolate intertwined, leaving a long finish.

Buying coffee beans is originally closely connected with your household water habits. If you are used to making clear soft water with water purification equipment, you may as well choose more light-roasted beans with bright fruity and floral notes; if you prefer to make rich coffee with mineral water, medium-dark roasted nutty cocoa styles will complement it even better. Once you clearly recognize the driving effect of water quality on extraction, every newly opened bag of coffee beans can show its expected flavor charm.