Sure, I can help with that! Here are some alternative ingredients you can use as substitutions for eggs, cow's milk, and peanuts, along with instructions and potential effects:

Eggs:

1. For binding purposes (in baking):

  - Flaxseed Meal or Chia Seeds: Mix 1 tablespoon of flaxseed meal or chia seeds with 3 tablespoons of water and let it sit for a few minutes until it becomes gelatinous. Use this mixture as a substitute for one egg.

  - Silken Tofu: Blend 1/4 cup of silken tofu until smooth and use it to replace one egg in recipes like cakes or muffins.

2. For leavening (when eggs act as a rising agent):

  - Baking Powder and Vinegar: Mix 1 tablespoon of vinegar with 1 teaspoon of baking powder to replace one egg in recipes that require leavening.

3. For moisture and binding (in recipes like pancakes or cookies):

  - Banana: Mash 1/4 to 1/2 ripe banana as a replacement for one egg.

  - Applesauce: Use 1/4 cup of unsweetened applesauce to substitute one egg in moist recipes.

Cow's Milk:

1. Plant-based Milk (Almond, Soy, Oat, Coconut): Use an equal amount of any plant-based milk as a substitute for cow's milk in recipes like baking, cooking, or beverages.

2. Unsweetened Yogurt (Dairy-free): Substitute with an equal amount of dairy-free unsweetened yogurt in recipes where milk is a minor component.

3. Nutritional Yeast: In savory recipes, nutritional yeast can add a creamy and cheesy flavor similar to milk.

Peanuts:

1. Almonds, Cashews, or Walnuts: Use an equal amount of finely chopped almonds, cashews, or walnuts as a substitute for peanuts in recipes like salads, stir-fries, or baked goods.

2. Sunflower Seeds or Pumpkin Seeds: These seeds can be a suitable replacement for peanuts in terms of crunch and texture.

3. Soy Nuts: If the allergy is specifically to peanuts and not tree nuts, soy nuts can be used as a crunchy alternative.

Potential Effects: Substituting these ingredients can alter the texture and flavor of the dish slightly, depending on the substitute used. For example, using bananas can add a fruity flavor, while flaxseed meal can add a nutty taste. The choice of milk substitute can affect the taste and texture of the dish, with almond milk adding a nutty undertone and coconut milk imparting a subtle coconut flavor. Substituting peanuts with other nuts or seeds can change the flavor profile, such as almonds having a sweeter taste compared to peanuts, while sunflower seeds can add a nutty and earthy flavor. Always check for cross-contamination if dealing with severe peanut allergies.