Prepare flowerpot as follows: After washing, grease, line with wax paper, cutting to fit, and grease again. Mix flour, baking soda and salt. In a separate bowl, cream butter, then add sugar, eggs and bananas, blending thoroughly. Combine milk and lemon juice to banana mixture, alternately add flour and milk mixture, then stir in nuts. Pour mixture into prepared flowerpot and place in removable liner. Place liner in base. Cover with 2 to 3 paper towels. Cover and cook on low 5-6 hours. Do not lift lid - No Peeking - until last hour.