Can one use whip cream from a can on shabbos, I read that the cream is liquid until one presses the can and then the pressure turns it into a cream and the cream would stay that way for 4 to 5 minutes before reverting back to the liquid? Is this molid?
This would be considered molid. Moreover, it would be considered “molid beyadayim,” meaning causing a change of state (from liquid to solid) by means of a direct action, which (according to Rema) is prohibited.
Sources: See Mishnah Berurah 318:102-103; the fact that the cream reverts to a liquid state after a number of minutes does not permit the formation of the cream, as we see from the case of heating congeealed sauce, which is considered molid even though the sauce will return to its congealed state after it cools.