bean jam
餡 centers on sweet bean paste, specifically the smooth jam made from azuki beans used in Japanese confectionery.
餡 combines the food radical 飠 with 臽, which likely contributes the sound. The character originally referred to a type of stuffed food or filling, later specializing to sweet bean paste in Japanese.
The food radical 飠 on the left suggests something edible, while the right side 臽 looks like a container with a lid. Imagine a pot filled with smooth, sweet bean jam.
For アン, picture an anko-filled pastry: the first syllable of 'anko' (あんこ) directly gives アン, and the sweet bean jam inside matches the meaning.
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red bean paste; red bean jam; anko
anpan; bread roll filled with red bean paste
red bean paste; red bean jam; anko
strained bean paste; smooth anko; fine-grained sweet bean paste
sweet brownish-green paste made from green peas
powdered bean paste; dried bean paste
sweet paste of white beans and miso
slightly crushed sweetened red-bean paste
kudzu sauce
food covered in a thick starchy sauce (usu. made of kudzu or katakuriko flour)
doughnut filled with red bean paste
mixture of bean jam, boiled beans, agar cubes, fruit pieces and syrup
mochi rice cake with red bean jam filling; mochi rice cake covered in red bean jam
steamed bun with sesame oil and anko filling