Reference guide · Updated on 2026-08-09 · Café en Casa Team

Coffee beans: roast, origin and how to choose yours

How to read a bag of coffee: roast date, variety, origin and which blend to use for espresso, filter or moka.

The grind: 50% of the result is right here

You can own a 1.000 € machine and make bad coffee with a 20 € blade grinder. The blades smash the bean and give an uneven powder: large particles that under-extract and fines that over-extract, in the same cup. You need conical or flat burrs (burrs), which grind to a uniform, adjustable size. For espresso we are talking about around 200-400 microns and it needs a grinder with fine steps; for a French press, 800-1.000 microns. If your budget is tight, split it: a modest machine with a good grinder beats the other way round.

See coffee beans on Amazon →

Capsules or beans: the real cost per cup

Here the numbers are clear. A closed-system capsule costs between 0,30 and 0,45 €; own-brand compatibles come down to 0,15-0,22 € but with uneven quality. A kilo of freshly roasted whole beans costs 15-25 € and yields around 55 double doses of 18 g, that is 0,10-0,15 € per cup. At two coffees a day, the annual difference is around 150-200 €: a 400 € bean-to-cup machine pays for itself in a little over two years against capsules. Capsules win on convenience, zero cleaning and zero learning curve; whole beans win on cost, freshness and quality ceiling.

Manual filter: V60, Chemex and AeroPress

Manual methods cost little and give a clean, aromatic coffee that no automatic machine can match. The V60 (Hario) is the most precise and the most demanding on the pour; the Chemex, with its thicker paper filter, holds back more oils and gives a very clean cup, ideal for light roasts; the AeroPress combines immersion and pressure, tolerates any grind and is practically unbreakable, which is why it is the queen of travel. With all three you need a gooseneck kettle to control the flow and a scale. Total investment: under 100 €.

Roast and freshness: the factor almost everyone ignores

Coffee is a fresh product. A bean is at its best between 7 and 30 days from roasting: before that it is still degassing and hard to extract, after that it loses aromas fast. Look on the bag for the roast date, not the best-before date: if only the latter is shown, it is a sign that the roast is not recent. The arabica brings acidity, sweetness and aromatic complexity; the robusta gives body, more caffeine and better crema, which is why Italian espresso blends carry between 10 and 30%. Store it in an opaque airtight tin, at room temperature, and never in the fridge.

Power use and the cost of coffee at home

An espresso machine uses between 1.100 and 1.500 W, but only while heating and extracting: the real consumption of two coffees a day is around 3-6 € a year, so wattage should not weigh on your decision. What does weigh is standby: bean-to-cup machines that switch off after 15-30 minutes avoid the residual draw that on older machines reached a permanent 15-20 W. Against the 1,40-1,80 € a coffee shop charges, any home machine pays for itself quickly: the saving is in the habit, not in the appliance.

Ratio, dose and time: the recipe that does work

A standard double espresso starts from 18 g of ground coffee to obtain 36 g in the cup (ratio 1:2) in 25-30 seconds from the moment the pump starts. If it runs out in 15 seconds, the grind is too coarse and the coffee will be sour and watery; if it takes 45, grind coarser or lower the dose. For filter coffee (V60, Chemex) the ratio is 1:16 or 1:17: 60 g of coffee per litre of water, at 92-94 °C, with a bloom initial bloom of 30 seconds. A 10 € set of scales with a timer improves your coffee more than any expensive accessory.

All Coffee Beans articles (8)

See coffee bean deals on Amazon →

Frequently asked questions about coffee beans

Which machine is best for a small office?

For 5-10 people, a bean-to-cup machine with a tank of at least 1,8 litres and a removable brew group, because you can clean it without calling anyone. Capsule machines are cheaper up front, but at 15 coffees a day the annual spend shoots past 1.500 €.

Can you grind the coffee the day before?

You can, but you lose a lot: ground coffee loses half its aroma in about 15 minutes because it multiplies the exposed surface. If you have no choice, grind only what you need and keep it airtight. Grinding on the spot is the biggest free upgrade there is.

Is a refurbished coffee machine worth it?

Yes, if it comes from the manufacturer or from a seller with at least a one-year warranty, and above all with bean-to-cup machines, where the discount is usually 25-40%. Ask whether the brew group and the gaskets were replaced; if they do not say, assume they were not and knock the cost of a service off the price.

Which works out cheaper, capsules or beans?

Whole beans, by a distance: 0,10-0,15 € per cup against 0,30-0,45 € for a closed-system capsule. At two coffees a day the gap is around 150-200 € a year, enough to pay off a bean-to-cup machine in little over two years.

What budget do I need for coffee beans?

It depends on your use: there are valid options in the entry range and advanced models that only pay off if you are going to make the most of their features. Go through the criteria in this guide, define your real use and compare the current price on Amazon before deciding.

Other guides from Mejor Café en Casa

Espresso machines Bean-to-cup machines Capsule machines Moka pot, AeroPress, V60 and Chemex Coffee grinders Drip and office coffee machines Coffee machine maintenance

As an Amazon Associate, Mejor Café en Casa earns from qualifying purchases. Prices and availability may vary.