Broccoli    
This is a quintessential healthy food and it’s easy to understand that it’s an alkaline food. Broccoli is one of those vegetables that has so much going on you simply have to make an extra effort to get more of it into your system. Some people eat broccoli every day as a way to maintain good health and make sure they’re on the alkaline side. You at least want to eat it multiple times a week, with 3 or 4 times being a good rule of thumb. 
Top stats (per 100g):
Vitamin C – 135%
Vitamin A – 11%
Calcium – 4%