What do you mean by Yankee bonds?

Yankee bonds are denominated in U.S. dollars. The Yankee Bonds are issued and traded in the United States. It is a debt obligation issued by a foreign entity such as a foreign company, a foreign bank or a foreign Government. You can read about the Masala Bonds – Benefits, Features & Significance in the given link.

Further readings:

1. Electoral Bonds – Introduction, Context, Importance & Significance
2. Types of Bonds – Basics of Bond, General Features and Characteristics