Ensalada Guanajuato

• 50 percen k
• 1 black pepper (freshly ground)
• 1 tomato
• 260 gr black beans (drained cooked)
• 260 gr wax beans (drained canned)
• 250 gr green beans (cut)
• 90 ml vegetable oil
• 45 ml vinegar i increased vinegar
• 45 ml mayonnaise
• 1 gr salt