Elderflower Vinegar

• 4 bottles white wine vinegar
• 8–12 elderflower heads

Soak the labels off the bottles without opening them, then shake the flowers to remove any insects or loose pollen. Break up the elderflower heads into small sprigs and push the flowers into the vinegar bottles, first removing a little of the vinegar. Screw the tops back on and stand the bottles on a sunny window sill.

After a week or so, strain the vinegar and replace the flowers with