Ties are extremely fragile in construction and if made of silk, the fabric itself may be very delicate.
If a spot does appear, do not attempt to remove the stain with a cotton napkin dunked in water or seltzer. Most food based stains have an oil component (butter, olive oil or fat), and oil and water do not mix.
Say your tie gets drenched in beer because you went to the Yankee games right from work, what should you do? Blot the stain to absorb the beer and bring your tie straight into Garment Care as soon as practical.
As a proper gentleman who cares for his wardrobe you should:
Garment Care Nigeria does wonders with stained ties.