Sima is a Finnish fermented low level alcoholic drink and soft drink. It is traditionally a form of mead, an alcoholic beverage produced by fermenting a solution of honey and water, although nowadays the honey is usually replaced with different kinds of sugar, mostly syrup, which makes it a sugar wine. The drink also has a very low alcohol content due to limited fermentation. Sima is therefore a sweet sparkling beverage that is mainly seasonal and connected with the Finnish Vappu festival. It is usually spiced by adding both the flesh and rind of a lemon.
Sima is usually accompanied by a munkki (donut), a tippaleipä (a special Vappu funnel cake), or a rosetti (rosette).
The Finnish word sima is an old name for honey, which Elias Lönnrot used to mean a drink in his epic poetry, the Kalevala.