Spring rhubarb salad

Ingredients

• 1/2 cup red wine vinegar
• 1/3 cup granulated sugar
• 1 tsp salt
• 2 stalks of rhubarb , cut into 1/4-in.-thick pieces (2 cups)

Salad

• 3 tbsp pickling liquid , (from mixture above)
• 1 tsp Dijon mustard
• Pinch of pepper
• 2 tbsp olive oil
• 6 cups mixed greens
• 1 watermelon radish , thinly sliced
• 1 1/2 cups sugar snap peas , trimmed and halved lengthwise
• 1/2 75-g pkg pea shoots , (2 cups)
• 1/4 cup chives , cut into 1-in. pieces
• 3 tbsp sunflower seeds