Winter is a great time of year for citrus in the Bay Area. For this bonus February post, we nerd out on grapefruits (available December-April). I have to admit, I thought grapefruits were either yellow or pink inside and that was essentially the difference between varieties. But Jake, the friendly staff member working at the Sunrise Farms stand at the Temescal farmer’s market proved me wrong. To demonstrate the difference between the rio and marsh grapefruits on the table, he cut them up for a taste.