Caffeine. An alkaloid present in coffee, tea and cola nuts. This is a stimulant with diuretic properties. Taken in excess it can be toxic and has addictive qualities.

Instant coffee

Coffee into which a liqueur is poured and with a thick layer of double cream (US: heavy cream) on top.

A large black coffee.

Milky coffee

Ground coffee

Russian coffee

Coffee without milk

Black coffee

Coffee pot