Blooming the yeast:
To bloom the yeast, add together warm milk, 1 tablespoon of sugar, and the yeast into a small bowl. The milk should be about 105 degrees fahrenheit. Let the mixture sit for 5 minutes until it is slightly sweet smelling a bubbly.
Making the dough
In the base of a stand mixer fitted with a dough hook, add the bread flour, freeze dried strawberries, milk powder, salt, and remaining sugar. Run the mixer on low and add in the bloomed yeast, egg, and tangzhong. Mix for about 2-3 minutes on low until the dough begins to form.
After 2-3 minutes add in the softened butter and continue to mix on low for about 1 minute. After the butter is incorporated, increase the mixer speed to medium high and mix for 8 minutes. At this point the dough should form a ball that is not too sticky, if it is not forming a ball, add in a few more tablespoons of bread flour.
Once the dough is smooth and formed into a ball, place it into a greased mixing bowl. Cover the bowl with a towel and proof it for about 1 hour or until it has doubled in size (the time this takes will depend on the temperature of where you are letting the dough proof)