Step-by-step photos didn't do, especially since and nothing to show. Plum wash, cut in half lengthwise, remove the seeds. Garlic peel and grind through a press or grated. To strip the sprigs of thyme leaves and rosemary needles. Herbs, garlic, sugar and salt to combine, add freshly ground black pepper, oil. Mix well. Apply the prepared spice blend in half of the plums, arrange them on a baking sheet lined with baking paper. Cook in oven for 3-4 hours. The time depends on the size of plums. Temperature 100*C with convection 110-120 without it. Goes well with cheese!