Prepare a baking tray with parchment paper.

Heat water in a microwave-safe container for 40 seconds at 600W. Mix strong flour, weak flour, dry yeast, sugar, salt, butter, and warmed water in a bowl until combined. Knead until smooth, then cover with plastic wrap and let rise for 30 minutes.

Punch down the dough, divide into 4 portions, and shape into balls. Cover with plastic wrap and let rest for 10 minutes.

Roll each ball into a 4cm x 24cm rectangle. Place bacon and edamame on top, roll tightly, and seal the edges. Repeat for all 4 portions.

Place the rolls seam-side down on the prepared baking tray. Cut diagonal slits every 2cm using kitchen scissors and tilt each section. Cover with plastic wrap and let rise for 20 minutes.