Rinse the zucchinis, trim the ends, and slice them very thinly using a mandoline. Rinse the radishes and slice them in the same way. In a jar, combine the miso, mustard, honey, lemon juice, olive oil, a pinch of salt, and pepper. Close the jar and shake well to create a perfectly emulsified dressing. Arrange the sliced vegetables and Gran Vita shavings on serving plates. Drizzle with the dressing as desired and finish with a few thyme leaves and flowers for garnish.