I am exclusively pumping for my 2nd son. With my 1st son I exclusively breast fed so I never had to deal with the Lipase issue. My milk smells and tastes sweet and fine when it is fresh, but if it's been in the fridge for more than 24 hours or frozen and thawed it has a very strong vitamin smell and taste. Is this normal? Also I take it you have to scald it to get the lipase taste to go away?????? Does scald mean to bring it just before a boil???? Please help!