Heat the work until very hot, add the oil and whirl it around to coat the side. Stir-fry all the vegetables over high heat for 5 minutes. Cover and cook over low heat for 2 minutes, or until tender. Add the crushed garlic, honey, dill, marjoram, non-dairy butter and all the fresh herbs, and toss until the butter has melted and the herbs have wilted slightly. Season well with salt and pepper and serve immediately as an accompaniment.