Zoro and Sanji were shopping together, the bags were in both of Zoro's hands, while the blonde wasn't carrying anything.

—Moss... Why aren't you holding my hand? —The blonde asked with a sad pout.

—It's because my hands are full... — The swordsman replied logically.

— But... — The cook was pouting.

And then, Zoro had one of the bags in his mouth - just like how he held the swords with his mouth - and his left hand was holding Sanji's hand.