The thing about Tucker and food, particularly sandwiches, is that he wasn't afraid to try anything. In that lack of fear he'd also discovered a great many odd mixes of food that he found quite tasteful. So, as she suggested her odd mix of sandwich toppings, he was quite game to try for it. 

"Ginger biscuits would actually be brill," Tucker said, tickling the fruit on the painting before they were slipping into the kitchen and being besieged by House Elfs. He rather liked the little buggers, but then they would get him food. Any sort he wanted. They were also great at letting him experiment as he wished. Which was precisely what he wanted to do at the moment.

"Ginger biscuits," he declared. "And breads. All sorts of sandwich breads. And, ice cream. You got chocolate? Vanilla? And," he glanced over at T.J. before looking back at the House Elfs. "Chips! That's what I want. Chips. You know," he said, returning his attention to T.J. as he took a seat at a table while the House Elves scurried about to get things, "chips dipped into a banana milkshake? Not bad. Not bad at all. Toss a bit of brown sauce onto a plate to add to the dipping, even better," he declared.

If he were a woman and pregnant, he'd swear by pickles and ice cream.