I'm new to baking and just tried making a Cinnamon Rolls recipe from Emily Luchetti's "Stars Cafe" cookbook. The recipe calls for dissolving dry yeast in 3 T of lukewarm milk, but it wouldn't dissolve completely and became clumpy. I whisked the clumps out (I'm not sure if this is recommended). After going online, I found that 1) water is the preferred method to dissolve, and 2) the yeast should bubble up which it didn't (the yeast was not expired). Any suggestions or advice on what to do or what I'm doing wrong?