I have written Cookbook Recipe Guides for almost every Harvest Moon game I have played. Many basic recipes are the same essentially from game to game but there are those that differ and when they do, mistakes can be costly.
There are differences in the Utensils that are available from game to game. Although recipes tend to be easier in Harvest Moon DS and Cute DS, I for one miss the Seasoning Set from Mineral Town games. Seasonings often are optional but once in awhile, can be critical to the success of a cooking venture.
For example, Ketchup in HM DS and HM Cute DS is made in a Mixer with a Tomato and an Onion. In Boy & Girl, you MUST use seasonings or it will be a Food Fiasco. The actual utensil used to make Mayonnaise in Boy & Girl is different from that used in HM DS and Cute DS. A Whisk is used in Boy & Girl, where a Mixer is used in HM DS and Cute DS. Recipes in FoMT and MFoMT are virtually identical to those in Boy & Girl, though, so if you have been playing either of those recently, and go on to play Boy & Girl, you will not be in any danger of becoming confused.
As a matter of fact, the special Recipes that are given to you by various villagers are given in the same words in many instances. I am waiting now to see if Anna holds a Baking Class in Boy & Girl on Saturday mornings. So far, although Manna delivered her set speech about Anna's expertise in baking, there have been no actual classes. It is early days, though...
Incidentally, if you are not fastidious by nature, you can eat your Food Fiasco for a little boost in energy. A gift of a Food Fiasco is useful if you wish to lower heart levels as well.
As in many Harvest Moon games, the actual gift that you receive at the Thanksgiving Festival will depend on heart level. If you wish to obtain all possible gifts, you need to have the eligible girls at different heart levels. As a boy, at the lowest level, you will obtain chocolate, ironically more rare an item in HM Boy & Girl than Chocolate Cake.