Print advertisement in a local coupon books or newspaper
Let them know what they should be expecting when they come it and the reason they will want to come back (this is your USP – Unique Selling Proposition): “Most food for your money”, “Best Thai food in town”, “Most fun you’ll have at a restaurant”, “For the perfect date”, “We dare you to try our California burrito”.
Give an offer they simply can’t refuse and that supports your USP
Put your extra marketing budget into your offer. If you have positioned yourself as having the best Thai food then really go for that. How about a ticket that says “Pad Thai Challenge: if it’s not the best you’ve ever have had your next meal is on us.” – The details would be along the lines of: “Every Pad Thai challenge order receives a coupon for a free order of any main dish, excluding Pad Thai”. Present this challenge ticket at time of order.” And here is the catch, give the free meal coupon to each challenge order when you bring them the food. Let them know that even if it’s their favorite (though you are sure it will be) you still want them to come back to your restaurant and try one of your amazing curry dishes. This way you give them more then they expect and hopefully win them as a long-term customer. Just be sure that your challenge dish really is the best around.