Below is an excerpt of what the Mahatma said about his vegetarian upbringing,  extracted from his book - "An Autobiography": 

"The Gandhis were Vaishnavas. My parents were particularly staunch Vaishnavas.... Jainism was strong in Gujarat, and its influence was felt everywhere and on all occasions. The opposition to and abhorrence of meat-eating that existed in Gujarat among the Jains and Vaishnavas were to be seen nowhere else in India or outside in such strength. These were the traditions in which I was born and bred."

Mahatma Gandhi experimented alot with different vegetarian food, and though he wanted to stop taking milk, he could not, it is stated that he drank goat's milk. 

To learn more about this great reformer, freedom fighter and political saint, read his book, An Autobiography.

(Photo credit: www.veganfirst.com)