| Type | Physical anomaly |
| First observed | Phone Microwave trial #4 |
| Subject | One banana (subsequently: many bananas) |
| Result state | Uniform green gel, structurally intact shape |
| Temperature | Ambient (never heated) |
| Weirdest property | Gelled banana found reattached to its bunch |
| Explanation | Partial temporal displacement |
| SERN equivalent | "Jellification" — see Z Program |
| Edibility | Formally unresolved; practically, no |
| Specimens retained | 3 (sealed, labeled, avoided) |
The Gel Banana Phenomenon is the lab's first piece of experimental evidence that the Phone Microwave was doing something to causality rather than to lunch. A banana placed in the modified microwave during a phone-linked cycle emerged transformed: its shape preserved, its substance converted to a uniform, faintly translucent green gel — at room temperature, with no cooking odor and no measurable heating. The lab's initial classification, "failed food experiment," survived exactly until someone noticed the second impossibility: the gelled banana was back on its bunch, across the room, reattached at the stem.
Reconstruction from the lab notebook: a banana was placed in the drum as improvised organic ballast during a phone-mode test. The cycle ran nine seconds. The drum was empty afterward — noted at the time as "banana misplaced??" — and the bunch on the table, purchased that morning, had regrown its missing member as gel.
The sequence matters. The banana did not gel in the microwave; it vanished from the microwave and appeared, gelled, in the past position it had occupied before being picked from the bunch. The gel is what a thing looks like after being sent backward in time as matter, approximately one room and one hour, by a machine tuned for neither. Kurisu's later analysis put it flatly: the PhoneWave's first successful transmission wasn't a D-Mail. It was fruit.
Trial tally (bananas)
| Property | Measurement | Method |
|---|---|---|
| Color | Uniform green, banana-skin hue throughout | Visual |
| Consistency | Firm gel; holds shape; cleaves cleanly | Chopstick, sacrificial |
| Temperature at discovery | 22.1 °C (ambient) | IR thermometer |
| Mass vs. original | −4.2% | Kitchen scale |
| Cell structure | None detectable | Daru's USB microscope |
| Odor | Faint banana, "wrong direction" (Mayuri) | Uncontrolled panel |
| Decay behavior | Does not brown; desiccates to resin | 3-week observation |
The −4.2% mass deficit has never been accounted for. Applying $E = mc^2$ to 4.2 grams of banana yields $3.8 \times 10^{14}$ joules — which manifestly did not deposit in the lab, or there would be no lab, no Akihabara, and a substantially different wiki. Where the mass went is the phenomenon's real open question, and the lab's file on it is titled "DO NOT SOLVE THIS BY EXPERIMENT."
The gel bananas are the hinge of the lab's whole story: the moment its output changed from toys to evidence.
First reproducible temporal displacement of matter by the lab — and a perfect miniature of SERN's "jellification" wall. Matter goes back; matter arrives wrong. The lab reached in nine seconds and one banana the conclusion SERN's archives reach across three decades and fourteen human subjects, which is either a triumph of small science or the darkest data-efficiency argument on record.
Three specimens persist in sealed jars on the lab's anomaly shelf, dated and initialed. Specimen #1 has desiccated into a translucent resin the color of old glass; #2 (bitten) is quarantined in a second, angrier jar; #3 remains gel-state and is the control nobody controls for anything. The Divergence Meter sits on the same shelf, which Mayuri arranged deliberately: "the warnings should live together." #lore
For the phase-of-matter background the gel cheerfully violates, see Gel. The phenomenon's grown-up siblings are documented under SERN's Z Program (the same failure at human scale) and Phone Microwave (the machine that did it). The lab's one attempt to reproduce the effect deliberately — trial #13, the vanished banana — is the subject of the unwritten page Trial 13, which no lab member has volunteered to author.