I added jar feeders full of honey to some of my hives about two weeks ago (the last time it was about 10°C / 50°F). The bees emptied the jars, so today I added some jars full of crystallized honey. And guess what? They like it!The weather stinks. It’s so cold the bees can barely do anything. None of my colonies are in great shape and this weather doesn’t help. Stupid weather.
June 15th, 2016: Here’s a better example of it from 2013:
The honey in the video was rock solid crystallized honey. That seems like the best way to do it.