You can get holy basil at Mekong Market on Rainier. You definitely can't find it at Fred Meyer or Safeway or QFC; you can't even find it at Asian Family Mart.

You can get holy basil at Mekong Market on Rainier. You definitely can't find it at Fred Meyer or Safeway or QFC; you can't even find it at Asian Family Mart. If there's a will, there's a way of course, but lack of easy sourcing means friction, and friction means not all Thai restaurants in the US will have it on their menu. I would be surprised if a Thai restaurant in Des Moines, Iowa served pad gaprao, whereas pad thai is universal at all US Thai restaurants.