WORD SPIRAL

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal a Type of liqueur. 1. Broth 2. Quick or furtive look 3. Paratrooper, informally 4. Dull pain 5. Dutch cheese 6. Sail support 7. Therefore 8. Goal attempt 9. Horse's gait 10. Body powder 11. Snooker rods 12. Foamy waves 13. Imperfection 14. Unwelcome plant 15. Cloudy 16. Arm or leg