Sister makes a cake for her sibling's birthday, they wanted a lemon cake, but the sister insisted it needed an extra ingredient they disliked: 'I cut into the cake, and I can immediately tell she’s added the ingredient that I asked her not to.'

Author image for María Cetra
María Cetra • Writer
Aug 9, 2026 1:00 PM EDT

If you offer to do something nice for someone, do it as they like. They never asked you to do it in the first place.

Why would someone offer to do something nice for someone else's birthday, only to do what they like instead of what the birthday person asked for? If you offer, you need to comply with the demand. Some people see the offering to do something as a way to do what they like. As if it were an opportunity to benefit themselves rather than the person they are making the offering for. That's exactly what happened in the story below.

If a friend told you they were going to help you paint your house, you accepted and told them it needed to be purple, but when you came home is green. How would you react? Would you be happy they did you the favor of painting your house? Or would you be mad they painted the color THEY liked instead of the one you asked for? Would you regret accepting their offering? Well, you probably would, especially if green was the color you hated the most. That is just another way of putting the situation of this story. The sister wanted a lemon birthday cake she was going to get for herself. Her sister offered to do it for her as some kind of gift. She agreed, but it had to be the lemon cake she liked. All that just to get a cake the birthday girl couldn't eat because it had the only ingredient she had told her sister not to add into the mix.

We can obviously anticipate how the birthday girl felt. Her sister had asked her multiple times if she could add the extra ingredient, and every single time she said no. Then why do it? Easy, she thought she knew best. Instead of doing what her sister wanted and actually liked, she did what she trusted was going to be the best. She couldn't admit that she was wrong by doing that, ruining the birthday cake for the one person it was important for. 
 

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  • 01
    My (29F) birthday was last week and I had a big party. I was talking to my sister (31F) about a cake that I wanted for the party and asked her if she had any recommendations of where I could order it from. She insisted that I shouldn't order the cake but instead let her bake it for me. I said I was happy to order and pay for someone to make it, but she insisted. She's a great baker, so I agreed.
    via CeeCeeLa
  • 02
    A birthday cake with decorations.
    via Stephen Wheeler

    A birthday cake with decorations. 

  • 03
    She did two test runs of the cake to make sure it was right, and both tests were fabulous. She nailed it. However, she was convinced that it needed one extra ingredient, one that I really dislike and that changes the whole flavor of the cake. Think adding coffee to a vanilla cake - that's how extreme the change is. She asked me about it twice and I said no both times. I don't like the flavor and I don't want it in my cake.
    via CeeCeeLa
  • 04
    Well, the birthday party comes, I cut into the cake, and I can immediately tell she's added the ingredient that I asked her not to. My husband also noticed immediately (it changed the color of the cake, so it was obvious!) and he asked her what happened. She said, 'it clearly needed the extra flavor to break it up, so l added it.' I know it's so stupid to get upset over a cake, but I was really frustrated.
    via CeeCeeLa
  • 05
    She saw in the moment that I was annoyed and immediately got defensive about it. Now, she's saying I'm ungrateful for all the effort and time and money she spent making me this cake. And I feel upset that I couldn't just have what I wanted on my birthday, especially when she asked me, twice, if I wanted the change and I said no. It cost her more to add in the ingredient I don't enjoy. If was more effort. So, AITHA for being annoyed?
    via CeeCeeLa
  • 06
    Should I just be grateful that she made me something that everyone else said tasted good, even if it wasn't what I wanted? Edit: ok, I was intentionally vague about the flavor in case she sees this post, but I've said it in comments, so oh well. I wanted a lemon cake and she added blueberry/blackberry compote, that she made from scratch. I just hate the flavor of blueberries, always have. So,
    via CeeCeeLa
  • 07
    I cut into the cake expecting it to be yellow, like a lemon, and it was bright purple. You couldn't taste lemon at all, but you sure could taste blueberries ... Additional edit: for those asking, I didn't actually say anything in the moment because I didn't want to ruin the vibe, but I definitely made a face. For sure. And since she'd done two test runs that others had tried, they were also like, 'hey, why is the cake purple inside now?' thinking
    via CeeCeeLa
  • 08
    that maybe I'd changed my mind or something. My sister clocked my reaction and my husband straight up asked her why the cake was a different color and she said it needed the extras. Then she got upset because enough people thought the situation was weird and she's been talking about it ever since. I did say to her (privately) later that night that I didn't like her adding the extras when Id asked her not to and she launched into a whole
    via CeeCeeLa
  • 09
    thing about how I'm ungrateful and it's not all about me because others would also be eating it, and so on. And since, I've heard from other people that she's still upset and that I should be grateful she did make me something and reminding me that 'it's just cake'. I am not bringing it up to anyone unless they bring up to me what she's been saying all week. So the AITHA is a genuine question since, yeah, it is just cake and probably not worth all this.
    via CeeCeeLa
  • 10
    For those saying it sounds like she hates me and she wanted me to hate the cake: I genuinely don't think this is it. I think she was so convinced her way was the best way and that I would see so if I just tried it. I did not agree. I also think she considered this version to be more impressive, because she talked so much about how she made the compote from scratch. She wanted people to be impressed - and they were! - but I was not. I hate blueberries.
    via CeeCeeLa
  • 11
    Another edit since this has come up a lot: Why two test runs? She's very Type-A and needs things to be correct (to her). I had about 50 people at my birthday, so she probably felt some pressure. The first one came out soggy (in her opinion. In my opinion it was delicious and perfect) and she wanted to change the lemon curd to the compote because it 'sets differently'. I said no. The second one she was happy with structure
    via CeeCeeLa
  • 12
    wise, but this time she wanted to add the compote for flavor depth. I said no again. I was so happy with what she'd made and told her so over and over. So, imagine my surprise when the cake is purple at my party!
    via CeeCeeLa
  • 13
    Balloons of different colors decorating a room.
    via Adi Goldstein

    Balloons of different colors decorating a room. 

  • 14
    dessertchef11 NTA she's the one that decided to change the flavor after you told her no twice.
    via dessertchef11
  • 15
    Top-Bit85 NTA. Thanks but no thanks. She knows why.
    via Top-Bit85
  • 16
    ghostcraft33 NTA - You said no twice and she added it anyway. If you had ordered it from a bakery they would've actually made it how the customer wanted. Additionally you paid her for it. You don't just get to make whatever YOU think it best when you're being paid to do something.
    via ghostcraft33
  • 17
    Physical_Ad6875 Sadly, she'll probably never see your side and will forever consider herself the victim in this a story. At least now, if she EVER asks to do something for you that you're willing to pay a professional to do the way you want, you know to just say "no, thank you" and do what you actually want. I guess a birthday cake is a small price to pay to learn that she doesn't care about your feelings and she can't be trusted.
    via Physical_As6875

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