If your girlfriend sends a picture of braised pork and fried potatoes, most of the time she is sharing a gourmet recipe with you. I hope you can share this delicious food with her. Or, she may just be joking with you. I hope you can guess what she did and enjoy this delicious food with you. In either case, you can reply to her and say, "It looks delicious. I look forward to tasting this food with you. " This can express your interest and open attitude.