I use a taylor instant read thermometer in all steps of my brewing and find it to be easy, quick and very accurate. I picked it up at target for about $11 and would never brew without it. I check my grain temp, water temp, mash temp, pitching temp. I trust it much more than my built in analog thermometer on my brew kettle. It is also much faster and easier to read. This is one important tool I believe every brewer should own. Knowing the exact temp is KEY!