Creating Matcha-Green Tea Bi-Color Croissants with White Chocolate can be straightforward if you follow these simple steps:

1. Prepare the Dough: In a bowl, combine the warm milk, instant yeast, and granulated sugar. Let it sit for about 5 minutes until frothy.
2. Mix Dry Ingredients: In a separate large mixing bowl, whisk together the all-purpose flour, salt, and matcha green tea powder.
3. Combine Mixtures: Pour the yeast mixture into the dry ingredients. Mix until a rough dough forms.
4. Knead the Dough: Transfer the dough to a floured surface and knead for about 5 minutes until smooth.
5. Incorporate Butter: Roll out the cold unsalted butter between two sheets of parchment paper into a rectangle. Place the butter rectangle in the center of the dough and fold the dough over it, sealing the edges.
6. Laminate the Dough: Roll out the dough into a large rectangle, then fold it into thirds like a letter. Wrap it in plastic wrap and refrigerate for 30 minutes. Repeat this process two more times for a total of three folds.
7. Shape the Croissants: Roll out the laminated dough into a large rectangle again. Cut it into triangles. Place a few white chocolate chips at the base of each triangle and roll them up tightly. Place them on a baking sheet lined with parchment paper.