Tunisian Turnips (with Harissa)

• 1/2 lb scarlet turnips, sliced into thin 1/2 inch pieces
• 1/4 cup lemon juice
• 1 tbsp olive oil
• 2 tbsp harissa (You can find harissa at many grocery stores, perhaps in the north African or Middle Eastern section.)
• pinch salt

Toss all the ingredients together in a bowl and serve raw, with couscous if you'd like.