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Look for Vino in the fields and ask him if he needs any help. He says if you get him some Wine he'll tell Lobart you helped him.

You can get Wine by completing The Bandits at Lobart's Farm or by buying it from Canthar the merchant (head out of the farm by the main gate and you'll find him nearby). Either way, return to Vino with the Wine and the price of the Work Clothes will drop by 10 gold.