the nutrients:

24-methylenecholesterol, campesterol, isofucosterol, β-sitosterol, cholesterol, and desmosterol.

Summary from the link:

Scientists have developed a breakthrough “superfood” for honeybees by engineering yeast to produce the essential nutrients normally found in pollen. In controlled trials, colonies fed this specially designed diet produced up to 15 times more young, showing a dramatic boost in reproduction and overall health. As climate change and modern agriculture reduce the availability of natural pollen, this innovation could offer a practical way to support struggling bee populations.

click here .. and we'll tell the... one ... simple ingredient. that could have been described in the title but here we are.

I approve this pro-bee story.

Don't the young that are born still need honey to survive, which is dependant on available wild pollen?

Viagra for bees. Who'd thought.