Tipsy Parsnips

• 1 garlic clove
• 190 gr baby parsnips
• 190 gr pearl onions
• 240 ml vegetable stock
• 28 gr butter
• 16 ml mustard (whole grain)
• 16 ml olive oil
• 5 ml honey
• 4 gr fennel seeds
• 2 gr sage (chopped fresh)