Clean, wash and possibly chop the green beans. Cook them together with the frozen broad beans in boiling salted water for about 10 minutes. Pour off, collecting 1/8 litre of cooking water, stir in the herb and mustard. Stir in oil and vinegar. Season with salt, pepper and sugar. Drain the white bean seeds, rinse with cold water and drain.
Cut the bacon slices into pieces and fry them crisply in a pan without fat. Remove and roast pine nuts in the pan until golden brown. Mix the beans with the lukewarm salad dressing. Line plates with frisée salad, arrange beans on top. Spread bacon and pine nuts over the salad