What are mustard greens, you ask? Mustard greens are a leafy, cruciferous vegetable in the same family as kale, cabbage, and arugula. Highly nutritious and flavorful, mustard greens are a versatile ...

Turn off the heat, add 175g grated Cheddar, 2 tablespoons Dijon mustard and 10g unsalted butter ... then trim any tough bits from the stalk and slice the stalk into 1-2cm thick pieces.