Innkeeper adulterates beer

Victorian illustration of 1850 to download showing a picture of an innkeeper in his cellar ‘bobbing’ beer, adulterating/diluting it to give himself a bigger profit. He puts a block of salt into a barrel while his assistant stirs a bucket of ‘black jack’, another adulterating ingredient. Publicans could make 2 to 3 casks of inferior beer from one genuine one; the tax on malt tempted them to do this.