I don't know anything about encapsulating, but I thought yeast was killed by boiling. If it were released, wouldn't the boiling water kill it anyway? See kellymom for some references: http://www.kellymom.com/bf/concerns/thrush/thrush-expressed-milk.html Ellen Ellen Rubin, MA, IBCLC *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome