Everything you need to start growing your own broccoli sprouts is available on Amazon. I typically have one jar growing while we eat the last "crop"....might have to go to two jars soon!
Measure out 3 T of broccoli seeds into your Mason jar
Soak seeds in water overnight (with sprouting lid on jar)
Drain the water, give the seeds a quick rinse, then drain again (shaking out as much water as you can.
Sit the jar upside down (at a slight angle) in a bowl lined with a dish towel
Repeat the rinse and drain cycle for ~3 - 5 days and let nature do her work.
When the sprouts are ~1 - 2" long, shake them out of the jar into a storage container - they're ready to eat!
Broccoli sprouting seeds