A liqueur coffee, as its name suggests, is a coffee brew with a 25 ml shot of liqueur. This brew is usually served in a clear liqueur coffee glass with the coffee and cream separated for visual and taste effect. The liqueur of choice is added first with a teaspoon of sugar mixed in. The glass is then filled to within an inch of the top with filtered coffee. Slightly whipped cream may then be poured over the back of a spoon, so that it floats on top of the coffee and liqueur mixture. The sugar is required in the coffee mixture to help the cream float.
Caffeine is a natural stimulant that works in your brain by blocking the effects of adenosine, an inhibitory neurotransmitter  . This increases neuronal firing in the brain and releases other neurotransmitters like norepinephrine and dopamine which improves mood, reduces stress, increases vigilance and reaction time and general brain function  .
Instant coffee is great when you need a pick-me-up but don't have a coffee maker. Unlike ground coffee, instant coffee granules are made from dehydrated brewed coffee. Although this means you can't make the actual granules at home, instant coffee is still an easy, tasty way to get your caffeine fix! It's particularly great when iced, and you could get creative by adding spices, whipping up a fancy latte, or making a frosty coffee shake.
A vacuum coffee maker brews coffee using two chambers where vapor pressure and vacuum produce coffee. This type of coffee maker is also known as vac pot, siphon or syphon coffee maker, and was invented by Loeff of Berlin in the 1830s. These devices have since been used for more than a century in many parts of the world and more recently have been given a new use by bartenders and chefs to make hot cocktails and broths.
Coffee’s a diuretic. This means drinking coffee will make you urinate more frequently than if you didn’t drink coffee. This is a good thing in most cases because it keeps your system cleansed. The human body often flushes out harmful bacteria and viruses this way, and drinking coffee enhances this natural process. Through this, black coffee drinkers become sick far less often.
Measure what you are putting into your coffee- If you are brewing your coffee manually, I recommend the process of weighing or measuring the water and the coffee for your recipe. Your additives should be no different. Measure the cream and sugar you put into your coffee. This will get you consistent results through the whole process, brewing to drinking. It would be a shame to meticulously weigh and brew your coffee only to haphazardly eyeball the amount of cream or sugar you add. It is better to be consistent. Measuring your additives will also serve the purpose of showing you exactly how much cream and sugar you are consuming.
Mazagran (sometimes misspelled as Mazagrin) is a cold coffee drink that originated in Algeria. It is typically served in a tall glass, and is made with coffee and ice. Sometimes sugar, rum, lemon or water is added. Sometimes a fast version is achieved by pouring a previously sweetened espresso in a cup with ice cubes and a slice of lemon.
Of course, you could just cut down on the alcohol intake. From the Archives of Internal Medicine (link). Another more recent study also showed coffee’s liver protecting benefits. link. Yet another study showed that both coffee and decaffeinated coffee lowered the liver enzyme levels of coffee drinkers. This study was published in the Hepatology Journal.
Coffee offers a wealth of health benefits — there's its well-known ability to temporarily boost concentration and alertness, and drinking coffee might also lower your risk of liver disease and type 2 diabetes, explains the Linus Pauling Institute. Black coffee is a healthier alternative to coffee flavored with calorie-laden cream and sugar, and it might also help you lose weight. Just make sure you don't overdo it — too much caffeine can have negative health effects.
Again, it's the caffeine working here. Your recommended maximum amount of caffeine is 400 milligrams, roughly the amount that you’ll get from 4 cups of coffee. If you’re caffeine-sensitive, be careful with coffee. You are probably already aware what amount and what kind of coffee suits, or doesn't suit you. The amount of caffeine that is safe for human consumption is actually written in our DNA.
Drinking black coffee daily helps to reduce the risk of diabetes which in later age can lead to organ damage and heart diseases. It was seen people who drank 2 or less cups of coffee had increased risk of diabetes. Coffee helps in controlling diabetes by increasing insulin production. Both caffeinated and decaffeinated coffee help in prevention of diabetes.