Bitter Leaf and Orange Salad with Orange Poppyseed Dressing

Bahan-bahan (4 porsi)

• 200 g / 6 oz bitter leaves (~8 cups, packed) (, such as endive, chicory and radicchio (either a mix or one kind, Note 1))
• 2 large oranges ((any kind))
• 2 tbsp apple cider or white wine vinegar
• 5 tbsp extra virgin olive oil or a nut oil
• 1 tsp grated orange zest (, lightly packed)
• 2 tsp Dijon mustard
• 1/4 tsp sugar
• 1 tbsp poppy seeds
• 1/2 tsp each salt and pepper