Questions About Foods Dogs Can Eat
This is generally not a good idea. For more information, see this article about dogs and peanuts.
Dogs should avoid spicy foods - especially those such as curries that contain onions and garlic, which are both highly toxic to dog and are an important ingredient in many savoury foods made for humans. Read this article on dogs and spicy foods.
Ginger has many health benefits and yes - in small quantities, dogs can eat ginger. Read the article on dogs and ginger.
Some dogs can eat tumeric, but certainly not all. If your dog suffers from one of a set of particular health conditions then turmeric would be dangerous. Read about dogs and turmeric for more information on the benefit of turmeric and the health conditions where turmeric is not advised.
However, if your dog is able to have turmeric, then do read about how to make Golden Paste and its health benefits.