To make cookies chewy, several factors come into play, including the ingredients used, the baking temperature, and the baking time. Here are some key factors that contribute to chewy cookies:

1. Ingredients:

   • Brown sugar: Using more brown sugar than white sugar can make cookies chewier due to its higher moisture content.
   • Fat: Using butter instead of vegetable shortening can contribute to a softer and chewier texture.
   • Corn syrup: Some bakers recommend using corn syrup to achieve extra chewiness.
   • Pudding mix: Adding a packet of cook-and-serve vanilla pudding to the cookie dough can help make the cookies soft and chewy.

2. Baking Technique:

   • Baking temperature: Baking cookies at a lower temperature, such as 325°F, for a shorter time can result in a softer and chewier texture.
   • Baking time: Removing the cookies from the oven just before they look done and allowing them to finish baking on the pan can help achieve a chewy texture.

3. Other Tips:

   • Refrigerating the cookie dough for a day before baking can also contribute to chewiness.
   • Using the "slam" method on the counter top and letting the cookies sit for a minute before transferring them to a cooling rack can help achieve chewy cookies.

By adjusting these factors, you can experiment with different recipes and techniques to achieve the desired chewy texture in your cookies.