Bloating can be due to multiple reasons ie eating too quickly, eating unsuitable foods, eating gas-producing foods, etc. Though it's best to identify and correct the prime cause of bloating, a remedy using fresh Ginger root and Lime can be very useful.
Fresh Ginger Root
Extract one teaspoon of ginger juice and mix with 1.5 teaspoons of lime juice and consume.
How to remove Ginger Juice: Grate some ginger root. Put the same in cheesecloth and fold like a small ball. Keep squeezing till it gets as dry as possible.
PS : Some foods and spices may not suit some people. Please do take your Doctor's advice before trying any home remedies.