You can easily get jackfruit from the local shops and supermarkets in your area. If some reason, they don't have jackfruit, you can purchase it online too. When picking jackfruit, be careful as the ripe fruit isn't suitable for tacos. Young jackfruit is green, and they sell the yellow fruit as whole fruit, not a pulled meat substitute.  Jackfruit is available as fresh, frozen, and canned fruit. You can choose any as per your choice.