Zefir (Russian: зефи́р) is a type of soft confectionery made by whipping fruit and berry purée (mostly apple puree) with sugar and egg whites with subsequent addition of a gelling agent like pectin, carrageenan, agar, or gelatine. It is produced in the countries of the former Soviet Union.The name given after the Greek god of the light west wind Zephyr symbolizes its consistency.
Zefir is derived from the traditional Russian pastila but with added egg white foam and a gelling agent. It is somewhat similar in its consistency to marshmallows, Schokokuss or krembo. The form typically resembles traditional meringue. However, in contrast to commercial meringue, it is never crisp. It is usually white or rose-colored.
Chocolate-coated versions are also widespread. In contrast to the other chocolate-coated marshmallow-like confectioneries they normally do not include a biscuit layer.
Learn more here