How would you joint this ?

http://www.1909kitchens.co.uk/kitchens/half-pencil-and-scalloped

I have always fitted standard(in my eyes) kitchens. Plinths set back with lay on doors. Getting more clients wanting in-frame and plinths set forward to make them look like traditional furniture.

Quite a lot I see have the detail like this one round the base. Where it will have a rail round. So the question is, how do you guys do it ? Mortice and tennon, dowel or Kreg style screw jig ? Or any jigs on the market or ways you can recommend ?

Thanks in advance !